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 a neutral compound with the formula C3H7N?

All three carbon atoms are directly bonded to the nitrogen atom.

The nitrogen atom forms three bonds with hydrogen atoms and has no lone pairs.

The nitrogen atom has a lone pair and is bonded to one carbon atom.

The nitrogen atom is double-bonded to a carbon atom and has two lone pairs.

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Verified step by step guidance

Identify the total number of valence electrons in the molecule C3H7N. Carbon has 4 valence electrons, hydrogen has 1, and nitrogen has 5. Calculate the total by multiplying each by the number of atoms and summing: $3 \times 4 + 7 \times 1 + 1 \times 5$.

Determine the bonding framework by considering typical bonding patterns: carbon usually forms 4 bonds, hydrogen forms 1 bond, and nitrogen typically forms 3 bonds and has 1 lone pair in neutral amines.

Analyze the given options by comparing them to common bonding rules and the total valence electrons. For example, nitrogen forming three bonds with hydrogen and no lone pairs is unusual for a neutral amine, and nitrogen double-bonded with two lone pairs is unlikely due to valence electron count and stability.

Recall that in neutral amines (like C3H7N), nitrogen usually forms three bonds (often to carbons and/or hydrogens) and retains one lone pair, which fits the description of nitrogen bonded to one carbon atom with a lone pair.

Conclude that the correct Lewis structure for C3H7N involves nitrogen bonded to one carbon atom and possessing one lone pair, consistent with typical amine structures and valence electron considerations.