Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

12. Molecular Shapes & Valence Bond Theory

MO Theory: Homonuclear Diatomic Molecules

General Chemistry

12. Molecular Shapes & Valence Bond Theory

MO Theory: Homonuclear Diatomic Molecules

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Multiple Choice

Which of the following statements is true about polarity?

All molecules with polar bonds are polar.

A nonpolar molecule has only nonpolar bonds.

The shape of a molecule is important in determining the molecular polarity.

The greater the difference in electronegativity between two atoms in a bond, the smaller the magnitude of polarity.

All of the above are true statements.

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Verified step by step guidance

Understand the concept of polarity: Polarity in chemistry refers to the distribution of electrical charge over the atoms joined by the bond. A polar bond occurs when there is a significant difference in electronegativity between the two atoms involved.

Evaluate the statement 'All molecules with polar bonds are polar': This is not necessarily true. A molecule can have polar bonds but still be nonpolar overall if the molecular geometry allows for the dipoles to cancel each other out.

Evaluate the statement 'A nonpolar molecule has only nonpolar bonds': This is incorrect. A nonpolar molecule can have polar bonds if the molecular geometry results in the dipoles canceling each other out.

Evaluate the statement 'The shape of a molecule is important in determining the molecular polarity': This is true. The molecular geometry determines how the dipoles from polar bonds are arranged and whether they cancel out or result in a net dipole moment.

Evaluate the statement 'The greater the difference in electronegativity between two atoms in a bond, the smaller the magnitude of polarity': This is incorrect. A greater difference in electronegativity typically results in a larger magnitude of polarity.