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 CH3CF3 (1,1,1-trifluoroethane)?

The central carbon atom is bonded to three fluorine atoms and one methyl group, with no lone pairs on the central carbon.

The central carbon atom is bonded to three hydrogen atoms and one fluorine atom, with two lone pairs on the central carbon.

The central carbon atom is bonded to two fluorine atoms and two methyl groups, with one lone pair on the central carbon.

The central carbon atom is bonded to four fluorine atoms, with no methyl group present.

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Verified step by step guidance

Identify the molecular formula and structure of CH3CF3 (1,1,1-trifluoroethane). It consists of two carbon atoms: one bonded to three hydrogens (CH3 group) and the other bonded to three fluorines (CF3 group).

Determine the connectivity: The two carbon atoms are bonded to each other, forming the backbone of the molecule. One carbon (the methyl carbon) is bonded to three hydrogens, and the other carbon (the trifluoromethyl carbon) is bonded to three fluorines.

Recall that carbon typically forms four bonds and does not have lone pairs in stable organic molecules. Each fluorine atom forms one bond and has three lone pairs to complete its octet.

Analyze the central carbon atom in the CF3 group: it is bonded to three fluorine atoms and one carbon atom (the methyl group), making a total of four bonds and no lone pairs on this carbon.

Compare the given statements with this bonding pattern to identify the correct description: the central carbon atom bonded to three fluorines and one methyl group, with no lone pairs on the central carbon, matches the correct Lewis structure.