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

11. Bonding & Molecular Structure

Lewis Dot Structures: Neutral Compounds

General Chemistry

11. Bonding & Molecular Structure

Lewis Dot Structures: Neutral Compounds

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Multiple Choice

Which of the following statements correctly describes the Lewis dot structure of the neutral compound CH5N (methylamine)?

Nitrogen has two lone pairs and forms two single bonds with hydrogen and carbon.

Nitrogen forms four single bonds with hydrogen and carbon, with no lone pairs.

Nitrogen has one lone pair and forms three single bonds with hydrogen and carbon.

Carbon forms five single bonds with hydrogen and nitrogen.

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Verified step by step guidance

Identify the total number of valence electrons in the molecule CH5N. Carbon has 4 valence electrons, hydrogen has 1 each, and nitrogen has 5 valence electrons. Sum these to find the total valence electrons available for bonding.

Determine the typical bonding patterns and octet rule preferences for each atom: Carbon usually forms 4 bonds, nitrogen typically forms 3 bonds and has 1 lone pair, and hydrogen forms 1 bond.

Construct a skeletal structure with carbon as the central atom bonded to nitrogen and hydrogens. Then, arrange the hydrogens around carbon and nitrogen to satisfy their bonding requirements.

Assign lone pairs to nitrogen after forming its bonds. Since nitrogen usually has 5 valence electrons and forms 3 bonds, it will have 1 lone pair remaining to complete its octet.

Verify that all atoms satisfy the octet (or duet for hydrogen) rule and that the total number of electrons used in bonds and lone pairs equals the total valence electrons calculated initially.