This video provides a fast way for you to determine if a molecule is polar or nonpolar. It provides examples so you can quickly distinguish nonpolar molecules from those that are polar. General Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&list=PL0o_zxa4K1BV-uX6wXQgyqZXvRd0tUUV0&index=3 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/ Here is a list of molecules that are classified as polar or nonpolar: N2, O2, Cl2, F2, H2 He, Ne, Ar, Xe CH4, C2H6, CH2=CH2, CF4, SBr6, BH3, CO2, PCl5, H2O, NH3, HF, CH3OH, CH3NH2, CH3COOH OCS, CH3F, SO2
Views: 663622 The Organic Chemistry Tutor
This video looks at how to determine polarity in a molecule by understanding how the bond polarities, molecule shape, and outside atoms influence polarity using bond polarity vector addition. This includes a flow chart that guides you through the various decisions needed to determine if a molecule is polar or not. Wikipedia 1/1/2018: In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multipole moment. Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms. A polar molecule with two or more polar bonds must have a geometry which is asymmetric in at least one direction, so that the bond dipoles do not cancel each other. While the molecules can be described as "polar covalent", "nonpolar covalent", or "ionic", this is often a relative term, with one molecule simply being more polar or more nonpolar than another. However, the following properties are typical of such molecules. A molecule is composed of one or more chemical bonds between molecular orbitals of different atoms. A molecule may be polar either as a result of polar bonds due to differences in electronegativity as described above, or as a result of an asymmetric arrangement of nonpolar covalent bonds and non-bonding pairs of electrons known as a full molecular orbital. Polar molecules The water molecule is made up of oxygen and hydrogen, with respective electronegativities of 3.44 and 2.20. The dipoles from each of the two bonds (red arrows) add together to make the overall molecule polar. A polar molecule has a net dipole as a result of the opposing charges (i.e. having partial positive and partial negative charges) from polar bonds arranged asymmetrically. Water (H2O) is an example of a polar molecule since it has a slight positive charge on one side and a slight negative charge on the other. The dipoles do not cancel out resulting in a net dipole. Due to the polar nature of the water molecule itself, polar molecules are generally able to dissolve in water. Other examples include sugars (like sucrose), which have many polar oxygen–hydrogen (−OH) groups and are overall highly polar. If the bond dipole moments of the molecule do not cancel, the molecule is polar. For example, the water molecule (H2O) contains two polar O−H bonds in a bent (nonlinear) geometry. The bond dipole moments do not cancel, so that the molecule forms a molecular dipole with its negative pole at the oxygen and its positive pole midway between the two hydrogen atoms. In the figure each bond joins the central O atom with a negative charge (red) to an H atom with a positive charge (blue). The hydrogen fluoride, HF, molecule is polar by virtue of polar covalent bonds – in the covalent bond electrons are displaced toward the more electronegative fluorine atom. Ammonia, NH3, molecule the three N−H bonds have only a slight polarity (toward the more electronegative nitrogen atom). The molecule has two lone electrons in an orbital, that points towards the fourth apex of the approximate tetrahedron, (VSEPR). This orbital is not participating in covalent bonding; it is electron-rich, which results in a powerful dipole across the whole ammonia molecule. Resonance Lewis structures of the ozone molecule In ozone (O3) molecules, the two O−O bonds are nonpolar (there is no electronegativity difference between atoms of the same element). However, the distribution of other electrons is uneven – since the central atom has to share electrons with two other atoms, but each of the outer atoms has to share electrons with only one other atom, the central atom is more deprived of electrons than the others (the central atom has a formal charge of +1, while the outer atoms each have a formal charge of −1⁄2). Since the molecule has a bent geometry, the result is a dipole across the whole ozone molecule. When comparing a polar and nonpolar molecule with similar molar masses, the polar molecule in general has a higher boiling point, because the dipole–dipole interaction between polar molecules results in stronger intermolecular attractions. One common form of polar interaction is the hydrogen bond, which is also known as the H-bond. For example, water forms H-bonds and has a molar mass M = 18 and a boiling point of +100 °C, compared to nonpolar methane with M = 16 and a boiling point of –161 °C. Nonpolar molecules A molecule may be nonpolar either when there is an equal sharing of electrons between the two atoms of a diatomic molecule or because of the symmetrical arrangement of polar bonds in a more complex molecule. Not every molecule with polar bonds is a polar molecule. Carbon dioxide (CO2) has two polar C=O bonds, but the geometry of CO2 is linear so that the two bond dipole moments cancel and there is no net molecular dipole moment; the molecule is nonpolar.
Views: 175094 Crash Chemistry Academy
To see all my Chemistry videos, check out http://socratic.org/chemistry This is an introduction to the basics of VSEPR Theory. VSEPR theory is a set of rules for how to look at a Lewis structure and determine the three dimensional (3D) shape of a molecule. The shapes have to do with the location of bonds and lone electrons pairs. In this video, we'll look at the following shapes: linear, trigonal planar, bent, tetrahedral, and trigonal bipyramidal
Views: 1726544 Tyler DeWitt
This chemistry video tutorial provides a basic introduction into polar and nonpolar molecules. Here are some other videos: How To Draw Lewis Structures: https://www.youtube.com/watch?v=PeY_sihSh8E Quantum Numbers: https://www.youtube.com/watch?v=sE1IvKAijmo&t=1s Intro to Chemistry: https://www.youtube.com/watch?v=-KfG8kH-r3Y Epic Music Mix: https://www.youtube.com/watch?v=uKKztV_6epU
Views: 63602 The Organic Chemistry Tutor
http://purplebonding.com A polar molecule is a molecule that has poles -- a positive and negative pole to be exact. To determine whether a molecule is polar, you first need to determine if the bonds between the atoms are polar. Next, you use VSEPR, valence shell electron pair repulsion theory, to predict the shape of the molecule. Some shapes will cause the dipoles to cancel out, much as in an even-sided tug-of-war. Some shapes will be asymmetrical, and the dipoles will not cancel out. These factors explain why carbon dioxide CO2 is nonpolar, whereas water H2O is. Watch the video to learn more about determining molecular polarity.
Views: 45123 CheminTen
*** PLEASE WATCH WITH ANNOTATIONS ON! SOME INACCURACIES IN GRAPHICS ARE NOTED AND CORRECTED IN ANNOTATIONS. THANKS! *** Molecules come in infinite varieties, so in order to help the complicated chemical world make a little more sense, we classify and categorize them. One of the most important of those classifications is whether a molecule is polar or non-polar, which describes a kind of symmetry - not just of the molecule, but of the charge. In this edition of Crash Course Chemistry, Hank comes out for Team Polar, and describes why these molecules are so interesting to him. You'll learn that molecules need to have both charge asymmetry and geometric asymmetry to be polar, and that charge asymmetry is caused by a difference in electronegativities. You'll also learn how to notate a dipole moment (or charge separation) of a molecule, the physical mechanism behind like dissolves like, and why water is so dang good at fostering life on Earth. -- Table of Contents Charge Assymetry & Geometric Asymmetry 01:33 Difference in Electronegatives 01:49 Hank is Team Polar 00:33 Dipole Moment 03:49 Charge Separation of a Molecule 04:12 Like Dissolves Like 04:41 Water is Awesome 05:10 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 2476510 CrashCourse
4.2.7 Predict the shape and bond angles for species using the VSEPR theory. Link to newer version of the video for the new IB syllabus (from 2016 onwards). https://youtu.be/LkoItNa7sbo
Views: 17606 Mike Sugiyama Jones
This video discusses how to tell if a molecule / compound is polar or nonpolar. Here is a list of molecules that are considered. Subscribe: https://www.youtube.com/channel/UCEWpbFLzoYGPfuWUMFPSaoA?sub_confirmation=1 General Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&list=PL0o_zxa4K1BV-uX6wXQgyqZXvRd0tUUV0&index=3 Support: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/ Nonpolar Molecules: Diatomic Molecules: H2, N2, O2, Cl2, Br2, F2, I2 Hydrocarbons: CH4, C2H6, C3H8, C2H2, C2H4 Identical Outer Elements With No Lone Pair on Central Atom: Tetrahedral Molecular Geometry: SiBr4, CCl4, CF4, GeH4, CBr4, SiH4 Trigonal Bipyramidal Molecular Geometry: PCl5, PF5, AsF5, PBr5, SbCl5 Linear Molecular Geometry: CO2, CS2, BeH2, BeCl2, and BeF2 Trigonal Planar Molecular Geometry: BH3, AlCl3, AlBr3, AlF3, FeBr3 Octahedral Molecular Geometry: SeF6, SBr6, SF6, SeCl6, SI6, SeI6 Polar Molecules: Same Outer Element With an Assymetrical Lone Pair(s) Bent Molecular Geometry: H2S, H2O, H2Se, SF2, SCl2, SeBr2, SO2, SeO2 Trigonal Pyramidal Molecular Geometry: NH3, PH3, PBr3, PCl3, NF3 T-shaped Molecular Geometry: IF3, ClF3, BrF3, ICl3, BrCl3 Square Pyramidal Molecular Geometry: IF5, ClF5, BrF5, ICl5, BrCl5 SeeSaw Molecular Geometry: SF4, SeCl4, SBr4, SeI4 Exception: XeF4 Different Outer Elements: (Usually Polar) CH3F, CSO, BH2F
Views: 367822 The Organic Chemistry Tutor
Did you know that geometry was invented by molecules? It's true! Until the first stars went supernova and littered all the elements across the cosmos, everything was simply spheres, from protons to stars. But then, under cooler planetary conditions, atoms came together to form molecules, and in doing so, they created the first shapes the universe had ever seen. Learn about the different shapes that molecules can make! To support this channel and keep up on STEM news at the same time, click on the link below and subscribe to this FREE newsletter: http://www.jdoqocy.com/click-9021241-13591026 Subscribe: http://bit.ly/ProfDaveSubscribe [email protected] http://patreon.com/ProfessorDaveExplains http://professordaveexplains.com http://facebook.com/ProfessorDaveExpl... http://twitter.com/DaveExplains General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths Biology Tutorials: http://bit.ly/ProfDaveBio American History Tutorials: http://bit.ly/ProfDaveAmericanHistory
Views: 399565 Professor Dave Explains
To see all my Chemistry videos, check out http://socratic.org/chemistry Lots and lots of practice problems for VSEPR theory. We will look at how to take a Lewis structure and determine what the 3D shape of the molecule will be. Here are the shapes that we will talk about: tetrahedral, trigonal pyramidal, bent, trigonal planar, linear. We will also talk about angles in degrees: 109.5º, 107º, 105º, 120º, 180º and 116º and amounts that are less.
Views: 540630 Tyler DeWitt
This video shows you how to draw the lewis dot diagram structure for SF4 - Sulfur Tetrafluoride. This video provides the molecular geometry, bond angle and hybridization for SF4. it also tells you if SF4 is polar or nonpolar.
Views: 33866 The Organic Chemistry Tutor
In this video we’ll use VSPRE Theory to practice the rules for identifying the major molecular geometries, including bond angles. We’ll start with the Lewis Structure for each molecule and then go over each of the following molecular geometries providing, models and visualizations, examples, and practice (with answers). - Linear - Bent (90 and 120-degree bond angles) - Trigonal Planer - Trigonal Pyramidal - Tetrahedral - Trigonal Bipyramidal - Octahedral The role of lone pairs (unbonded electron pairs) and their VSEPR influence on molecule shape will also be addressed in the video. Get more chemistry help at: http://www.Breslyn.org. Molecular Shapes done with PhET's free online website: https://phet.colorado.edu/sims/html/molecule-shapes/latest/molecule-shapes_en.html Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).
Views: 59210 Wayne Breslyn
This chemistry video tutorial provides a basic introduction into bond polarity, electronegativity, and the dipole moment of a bond. It explains how to indicate the polarity of a bond and of a molecule using electronegativity and it discusses how to draw the dipole moment of a bond. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/
Views: 79567 The Organic Chemistry Tutor
This chemistry video tutorial explains how to draw lewis structures of molecules and the lewis dot diagram of polyatomic ions. It shows you how to calculate the formal charge, how to draw the resonance form of the lewis structure and how to determine the hybridization of the central atom. It also discusses molecular geometry / vsepr and the bond angles that are found in common molecules as well as if the molecule is polar or nonpolar. This video contains plenty of formulas, notes, examples, and practice problems that will help you on your next worksheet assignment or upcoming quiz. This video contains all the answers / solutions to the problems posted. General Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&list=PL0o_zxa4K1BV-uX6wXQgyqZXvRd0tUUV0&index=3 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Here is a list of topics: 1. How to draw the Lewis structure of a molecule or compound 2. Valence Electrons of Common Elements - Boron, Carbon, Nitrogen, Oxygen and Fluorine 3. Number of Bonds Elements Prefer to Form 4. Lone Pairs, Bonding Electrons, and Nonbonding Electrons 5. Octet Rule - Expanded Octet vs Incomplete Octet 6. Lewis Dot Structure of Diatomic Molecules / Elements - F2, O2, N2, and H2 7. Lewis Dot Diagram - BH3 - Incomplete Octet 8. Molecular Geometry of BH3 - Trigonal Planar - Bond Angle 120 Degrees 9. Formal Charge Calculations - Equation / Formula 10. Formal Charge = Valence Electrons - (Bonds + Dots) 11. How to determine if a molecule is polar or nonpolar 12. Polar vs Nonpolar Covalent Bonds - Electronegativity Difference 13. Lewis Structures of H2O, H3O+, and OH- With Formal Charge Calculation 14. Why is CO2 Nonpolar When CO is Polar 15. Lewis Structure For CO2 and CO 16. CO2 - Linear Molecular Geometry, 180 Bond Angle 17. Hybridization - s, sp, sp2, sp3, dsp3 or sp3d, d^2sp3 or sp3d2 18. Lewis Structure For CH4 - Tetrahedral Molecular Geometry - Bond Angle of 109.5 Plus Hybridization 19. Lewis Dot Structure For NH3 - Trigonal Pyramidal - Bond Angle of 107, Sp3 Hybridized. 20. Lewis Structure For H2S - Bent Molecular Geometry and Tetrahedral Electron Pair Geometry 21. Molecular Geometry vs Electron Pair Geometry 22. Lewis Structure For SF6 - Octahedral Molecular Geometry, 90 Bond Angle, Sp3d2 Hybridized, Nonpolar 23. Lewis Structure For PCl5 - Polar or Nonpolar? 24. Lewis Structure For SF4, I3-, XeF4, IF5 - Multiple of 8 technique 25. How To Determine The Number of Lone Pairs on the Central Element 26. Lewis Structure For SOF2, POCl3, SO2Cl2, XeOF2 - Multiple Elements in a molecule - How to determine which element goes in the middle 27. Lewis Dot Diagrams With Resonance - CO3 2-, NO2-, BF3, and NO3- Lewis Structure 28. Polyatomic Ions - Lewis Structure For SO4 2-, PO4 3-, ClO4-, ClO3-, ClO2-, and ClO- 29. Lewis Structures With Radicals - Odd Number of Electrons - NO2 and NO Lewis Structure 30. Lewis Structures - Organic Molecules - Organic Chemistry - Functional Groups 31. Lewis Structure For C2H6 Ethane, C2H4 Ethene, C2H2 Acetylene or Ethyne - Alkanes, Alkenes, and Alkynes 32. Lewis Structure For CH3OH - Methanol - Alcohol Functional Group 33. Lewis Structure For CH3CHO - Ethanal - Aldehyde / Carbonyl 34. Lewis Structure For CH3COOH - Ethanoic Acid or Acetic Acid Found In Vinegar - Carboxylic Acid Functional Group 35. CH3COCH3 Lewis Structure - Acetone or Propanone - Ketone 36. Lewis Structure For CH3OCH3 - Dimethyl Ether 37. Lewis Structure For CH3CO2CH3 - Ester 38. Lewis Structure For CH3CH2NH2 - Ethyl Amine 39. Lewis Structure For CH3CONH2 - Ethanamide - Amide Functional Group 40. Lewis Structure For CH3CN - Nitrile
Views: 288303 The Organic Chemistry Tutor
This chemistry video tutorial provides a basic introduction into VSEPR theory and molecular structure. It contains examples and practice problems of drawing lewis structures along with the correct molecular geometry. Structures include the tetrahedral shape, bent, linear, trigonal planar, and trigonal pyramidal molecular geometry as well as their bond angles. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/
Views: 153869 The Organic Chemistry Tutor
In this live tutoring session I focused on electron geometry, molecular geometry & polarity. Enjoy! 📗 FREE CHEMISTRY SURVIVAL GUIDE https://melissa.help/freechemguide 🙋♀️🙋♂️GOT A QUESTION? ASK ME HERE https://melissa.help/me 👉 SHOP MY STEP-BY-STEP CHEMISTRY NOTES👈 https://melissamaribel.com/ -Thermochemistry Notes https://melissa.help/thermonotes -Acids and Bases Notes https://melissa.help/acidbase1notes -Naming Compounds and Acids Notes https://melissa.help/namingnotes -Dimensional Analysis, Significant Figures, and Density Notes https://melissa.help/sigfignotes -Gas Laws Notes https://melissa.help/gaslawsnotes -Stoichiometry Notes https://melissa.help/stoichnotes -Redox Reactions Notes https://melissa.help/redoxnotes -Molarity Notes https://melissa.help/molaritynotes -Limiting Reactants Notes https://melissa.help/limreactnotes -Lewis Structures Notes https://melissa.help/lewisnotes -Kinetics Notes https://melissa.help/kineticsnotes 🧡SHOW YOUR SUPPORT ON PATREON https://www.patreon.com/melissamaribel 👍MELISSA'S FAVORITES ON AMAZON https://www.amazon.com/shop/chemistrywithmelissamaribel --OTHER RESOURCES TO HELP YOU GET THROUGH SCHOOL-- 🙌 This was my go-to homework help when I was in school. Chegg Study is one of my favorites. https://che.gg/melissamaribelstudy 📚 I made the mistake of buying all of my textbooks, I wish I had the option of renting them. Thankfully you do, with Chegg Textbook Rentals. https://che.gg/melissamaribelrentals 💰 If you bought a textbook and don’t want the hassle of selling it, Chegg can do the work for you, with Chegg Buyback. https://che.gg/melissamaribelbuyback 📝 QUICKSTUDY REFERENCE GUIDES ⬇️ 📕 CHEMISTRY BREAKDOWN AND REVIEW https://amzn.to/2t50xWx 📙 CHEMISTRY EQUATIONS AND ANSWERS https://amzn.to/2MPjC88 📘 CHEMISTRY TERMINOLOGY https://amzn.to/2t9cv1o DISCLAIMER: Some links in the description are affiliate links, which means that if you buy from those links, I’ll receive a small commission. This helps support the channel and allows me to continue making videos like this. Thanks for the support! 💁♀️ HI I'M MELISSA MARIBEL I help students pass Chemistry. I used to struggle with this subject, so when I finally graduated with a bachelor's degree in Chemistry, I became a tutor so that you wouldn't have to struggle like I did. I know that with the right help, YOU CAN LEARN ANYTHING! 👋 FOLLOW ME Instagram: https://www.instagram.com/hellomelissam/ Facebook: https://www.facebook.com/hellomelissam/ Twitter: https://twitter.com/hellomelissam
Views: 15020 Melissa Maribel
How to analyze the geometry of a molecule to decide whether a molecule that contains polar covalent bonds is polar or non-polar overall.
Views: 6894 GGHS Chemistry
This organic chemistry video tutorial explains how to predict the bond angles of certain molecules. Subscribe: https://www.youtube.com/channel/UCEWpbFLzoYGPfuWUMFPSaoA?sub_confirmation=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor https://www.facebook.com/MathScienceTutoring/ New Organic Chemistry Playlist https://www.youtube.com/watch?v=6unef5Hz6SU&index=1&list=PL0o_zxa4K1BXP7TUO7656wg0uF1xYnwgm&t=0s
Views: 38122 The Organic Chemistry Tutor
CLEAR & SIMPLE - What is the difference between polar and nonpolar molecules? Check out this video on Molecular Polarity which makes this EASY. Polar and Non Polar Covalent Molecules - This video explains how to determine if a molecule is polar or non polar. I show you how, based on symmetry alone, a molecule can be determined to polar or non polar. Although I show you the shapes of the molecules, it is important for you to be able to classify the shapes according to the VSEPR Theory, so please learn your shapes. The degree of polarity can be determine to a certain extent by the differences in electronegativity, but I don't cover that in this video. Best wishes in learning.
Views: 202226 sciencepost
Learn to determine if a molecule is polar or nonpolar based on the polarity between bonds and the molecular geometry (shape). We start with the polarity between bonds using the electronegativity (EN) values on the Periodic Table provided. After that we’ll look at how the shape of the molecule, based on VSEPR, allows us to determine if the entire molecule is polar or nonpolar. In the video you will also learn how to deal with unbonded electron pairs (lone) and how it affects the symmetry and polarity of molecules. To help you learn and retain knowledge practice problems, with solutions, are provided throughout the video. Contents: - Finding is a bond between two atoms is polar or nonpolar. - Practice. - Finding is molecules are symmetrical and how this impacts polarity. - Practice. - The role of unbonded electron pairs on molecular shape and polarity. - Practice - Wrap up on polar and nonpolar molecules. Get more chemistry help at http://www.thegeoexchange.org/chemistry/bonding Molecular Shapes done with PhET's free online website: https://phet.colorado.edu/sims/html/molecule-shapes/latest/molecule-shapes_en.html Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).
Views: 44550 Wayne Breslyn
This organic chemistry video tutorial explains how to determine which bond is more polar. It also explains how to rank the bonds from least polar to most polar. Subscribe: https://www.youtube.com/channel/UCEWpbFLzoYGPfuWUMFPSaoA?sub_confirmation=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor https://www.facebook.com/MathScienceTutoring/ New Organic Chemistry Playlist https://www.youtube.com/watch?v=6unef5Hz6SU&index=1&list=PL0o_zxa4K1BXP7TUO7656wg0uF1xYnwgm&t=0s
Views: 28105 The Organic Chemistry Tutor
A discussion of the method used to determine whether a molecule has an overall molecular dipole moment or not. Polar versus nonpolar molecues. General Chemistry
Views: 64393 Shawn Shields
Using the VSEPR Theory to predict the electronic geometry, molecular geometry, and dipole moment of a molecule. This ABU notation is sometimes written as the AXE notation, where "A" is the central atom, "B" (or "X") is the number of bonded atoms, and "U" (or "E") is the number of unshared pairs of electrons.
Views: 12349 Janet Coonce
This video discusses the shapes associated with different molecules that students will use in their chemistry course. Shapes include linear, bent (angular), trigonal planar, trigonal pyramidal, tetrahedral, trigonal bipyramidal, seesaw, t-shaped, octahedral, square pyramid and square planar. Part 1- Determining Shapes of Molecules Part 2- Determining Hybridization of an atom Part 3- Bond Angles in molecules
Views: 83087 kentchemistry.com
022 - Lewis Diagrams and VSEPR Models In this video Paul Andersen explains how you can use Lewis Diagrams and VSEPR Models to make predictions about molecules. The Lewis diagrams are a two-dimensional representations of covalent bonds and the VSEPR models show how the molecule could exist in three dimensional space. Pi bonding and odd valence electrons require an extension of this model. Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: AJ. A Blue Balloon on a Ribbon, July 18, 2008. Open clip Art Library image's page. http://commons.wikimedia.org/wiki/File:Blue_toy_balloon.svg. "File:Acetic Acid Atoms.svg." Wikipedia, the Free Encyclopedia. Accessed August 18, 2013. http://en.wikipedia.org/wiki/File:Acetic_acid_atoms.svg. "File:AX4E0-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed August 16, 2013. http://en.wikipedia.org/wiki/File:AX4E0-3D-balls.png. "File:AX6E0-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed August 18, 2013. http://en.wikipedia.org/wiki/File:AX6E0-3D-balls.png. "File:Bent-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed August 17, 2013. http://en.wikipedia.org/wiki/File:Bent-3D-balls.png. "File:Linear-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed August 17, 2013. http://en.wikipedia.org/wiki/File:Linear-3D-balls.png. "File:Nitrate-ion-resonance-2D.png." Wikipedia, the Free Encyclopedia. Accessed August 17, 2013. http://en.wikipedia.org/wiki/File:Nitrate-ion-resonance-2D.png. "File:Nitrogen-dioxide-3D-vdW.png." Wikipedia, the Free Encyclopedia. Accessed August 17, 2013. http://en.wikipedia.org/wiki/File:Nitrogen-dioxide-3D-vdW.png. "File:Pi-Bond.svg." Wikipedia, the Free Encyclopedia. Accessed August 18, 2013. http://en.wikipedia.org/wiki/File:Pi-Bond.svg. "File:Sigma Bond.svg." Wikipedia, the Free Encyclopedia. Accessed August 18, 2013. http://en.wikipedia.org/wiki/File:Sigma_bond.svg. "File:Tetrahedral-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed August 17, 2013. http://en.wikipedia.org/wiki/File:Tetrahedral-3D-balls.png. "File:Trigonal-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed August 17, 2013. http://en.wikipedia.org/wiki/File:Trigonal-3D-balls.png. "File:Trigonal-bipyramidal-3D-balls.png." Wikipedia, the Free Encyclopedia. Accessed August 18, 2013. http://en.wikipedia.org/wiki/File:Trigonal-bipyramidal-3D-balls.png.
Views: 371563 Bozeman Science
This chemistry video tutorial provides a basic introduction into molecular geometry and vsepr theory. Examples and practice problems include the trigonomal bypiramidal structure, octahedral molecular structure, seesaw, t-shape, square planar, and square pyramidal molecular geometry as well as some of the bond angles of these structures. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/
Views: 62242 The Organic Chemistry Tutor
Ionic Bond, Covalent Bond, James Bond, so many bonds! What dictates which kind of bond will form? Electronegativity values, of course. Let's go through each type and what they're all about. To support this channel and keep up on STEM news at the same time, click on the link below and subscribe to this FREE newsletter: http://www.jdoqocy.com/click-9021241-13591026 Subscribe: http://bit.ly/ProfDaveSubscribe [email protected] http://patreon.com/ProfessorDaveExplains http://professordaveexplains.com http://facebook.com/ProfessorDaveExpl... http://twitter.com/DaveExplains General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths Biology Tutorials: http://bit.ly/ProfDaveBio American History Tutorials: http://bit.ly/ProfDaveAmericanHistory
Views: 284096 Professor Dave Explains
The basic rules for drawing molecules as indicated by VSEPR theory always begins with a correctly drawn Lewis structure. The steric number includes both lone pairs and bonding pairs on the central atom. The resulting geometry is always decided by the steric number, but the shape of the molecule as perceived by experimental measurement only "sees" bonding pairs. The names of molecular geometry are assigned on the basis of the bonding pairs. For example, iodine trichloride possesses two lone pairs and three bonding pairs. The geometry of the molecule is shaped like a trigonal bipyramid, but it is referred to as T-shaped because the lone pairs are essentially invisible to the measuring techniques used to determine molecular geometry. The example of iodine trichloride is also used to compare which of three possible geometries results in the least number of unfavourable repulsions between electron pairs. The three possible configurations have two, one and no lone pairs in the equatorial postion which serves to illustrate how a 120° bond angle remedies the unfavourable repulsions that occur between electron pairs at 90°. The most stable configuration of iodine trichloride has a minimum number of lone pair bonding pair interations and no lone pair lone pair interactions. Erratum: I said fluorine is the most polar element. I meant to say it is the most electronegative! Sorry for the confusion.
Views: 7382 Massimo Bozzi
This video discusses if CH2Cl2 is polar or nonpolar. CH2Cl2 is known as dichloromethane. It has a dipole moment of 1.60D. This video also provides the lewis structure of CH2Cl2 and discusses the bond polarity of the C-H and C-Cl using electronegativity values to determine if CH2Cl2 is polar or nonpolar.
Views: 62341 The Organic Chemistry Tutor
NEW & IMPROVED VIDEO LINK - I've improved this video, check it out (http://youtu.be/4SjSKjmO38c). Determining the Type of Bond Based On Electronegativity. Polar, Nonpolar or Ionic Bonds. This is meant to be an introduction to molecular polarity. Higher order polar covalent molecules are not discussed. Clear & Simple Chemistry Explanation.
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To support me in my journey you can donate ([email protected] 9161123482) or Alakh Pandey ,Bank of Baroda, Rajrooppur, Allahabad,U.P IFSC: BARB0RAJROO Account No: 19210100020819 A small amount of Rs 100 even will be of great help. Follow us on: Instagram https://www.instagram.com/physicswallah/ Facebook: https://www.facebook.com/physicswallah 11 Chap 4 | Chemical Bonding and Molecular Structure 01| Introduction | Cause of Chemical Bonding | https://youtu.be/daPAcFFSFdY 11 Chap 4 | Chemical Bonding and Molecular Structure 02 | Ionic Bond | Electrovalent Bond IIT JEE https://youtu.be/OqdNZTHxPxM 11 Chap 4 | Chemical Bonding and Molecular Structure 03| Lattice Energy | Born Haber Cycle IIT JEE | https://youtu.be/ch9HorGagHE 11 Chap 4 || Chemical Bonding 04 || Fazan's RULE || Covalent Character in Ionic Compounds | https://youtu.be/d3iFlT8SlvA 11 Chap 4 || Chemical Bonding 05 || Lewis Dot Structure || How to draw Lewis Dot Structure Of || https://youtu.be/8-Qs1mnoJ2M 11 chap 4 || Chemical Bonding 06 || Valence Bond Theory VBT || Difference between sigma and Pi Bond https://youtu.be/8B__xDUKqbM 11 chap 4 | Chemical Bonding 07 | Pi Bond | P Pi - D Pi | P Pi - P Pi | IIT JEE NEET Pi Bond https://youtu.be/IrX7AcU07To Chemical Bonding 08 | Hybridisation | How to Find Hybridisation | Hybridisation of Atom IIT JEE NEET https://youtu.be/AvhUUY8yD08 11 Chap 4 | Chemical Bonding 09 | VSEPR theory | Shapes of Molecules | Geometry , Hybridisation ,etc https://youtu.be/x2-nP7i6T34 11 Chap 4 | Chemical Bonding 10 | Molecular Orbital Theory IIT JEE NEET || MOT Part I Introduction | https://youtu.be/TQEhLXkNdmo Class 11 chap 4 | Chemical Bonding 11 || Molecular Orbital Theory IIT JEE NEET || MOT Part II || https://youtu.be/XCwMrnVvSTU Class 11 chap 4 | Chemical Bonding 12 || Dipole Moment IIT JEE NEET || Polar and Non Polar Molecule https://youtu.be/4KDkldXTj6w 11 chap 4 || Chemical Bonding 13 || Bond Angle || Tricks For Bond Angle IIT JEE NEET || BOND ANGLE https://youtu.be/AjWwHkAlPSo 11 chap 4 || Chemical Bonding 14 || Dragos Rule || Bond Angle Dragos Rule IIT JEE ADVANCE / NEET https://youtu.be/GfKmguqX-2g 11 chap 4 || Chemical Bonding 15 || Vanderwaal Forces || IIT JEE NEET || London Forces , etc || https://youtu.be/664YicsoYkg 11 chap 4 || Chemical Bonding 16 || Hydrogen Bonding IIT JEE MAINS / NEET || https://youtu.be/k8tYXDKb2yE
Views: 467412 Physics Wallah - Alakh Pandey
Two examples of how to determine Molecular Geometry, Bond Angle, Hybridization, and Polarity.
Views: 38332 Wayne Breslyn
How to determine if a molecule is polar or not? This question can be easily answered by looking at the atoms and lone pair surrounding the central atom. We'll need to draw the lewis structure of the compound and judging on the type of atoms or presence of lone pair electrons surrounding the central atom, we can easily classify the molecular polarity, meaning, determine whether the molecule is polar or nonpolar. Watch the video to find out more on the SUPER EASY trick! Answers: a. polar b. nonpolar c. polar Here's when you'll find: 0:46 - CF4 2:02 - HCN 2:22 - NF3 * Closed captioning is available in English * Subscribe for more Chemistry videos ► https://goo.gl/VXujkS PLAYLISTS: ►Matter: https://goo.gl/ER1bP6 ►Measurement: https://goo.gl/rGoeEb ► Covalent Bonding: https://goo.gl/TDPfpS ►Chemical Equations: https://goo.gl/1LKrxj ►Organic Chemistry: https://goo.gl/XnpJVo ►Functional groups: https://goo.gl/SkWswp ►Basic Math for Chemistry: https://goo.gl/WvZH3k YOU MAY ALSO LIKE: ►VSEPR: https://youtu.be/HnyBINJ_z2c ►Lewis structure - compound: https://youtu.be/N9kgmHc8ZFQ ►Lewis structure - ion: https://youtu.be/QZlSmelXwaw Facebook: @ChemSimplified Website: ChemSimplified Udemy Course: Ionic Compound Music: Jazz Tape
Views: 1890 Chem Simplified
This tutorial examines how to determine the molecular polarity of a molecule based upon bond type and electron distribution. A number of worked examples are done explaining how different bond type combinations work to produce both polar and non-polar molecules.
Views: 596 Sarah English
Professor Davis explains how to identify electron domains and use VSEPR Theory to ultimately predict the molecular geometry of simple compounds, including examples of each.
Views: 4594 ChemSurvival
This video shows you how to draw the lewis structure for BF3. It also discusses the molecular geometry of BF3 and answers the question: Is BF3 polar or nonpolar?
Views: 46026 The Organic Chemistry Tutor