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 CCl2F2 (dichlorodifluoromethane)?

The central carbon atom has one lone pair and forms single bonds with two chlorine atoms and two fluorine atoms.

The central carbon atom forms double bonds with both chlorine atoms and single bonds with both fluorine atoms.

Each chlorine atom forms a double bond with the carbon atom, while each fluorine atom forms a single bond.

The central carbon atom forms single bonds with two chlorine atoms and two fluorine atoms, and has no lone pairs.

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Verified step by step guidance

Identify the central atom in the molecule CCl2F2. Since carbon is less electronegative than chlorine and fluorine, carbon will be the central atom.

Determine the total number of valence electrons available. Carbon has 4 valence electrons, each chlorine has 7, and each fluorine has 7. Calculate the sum: 4 + 2*7 + 2*7.

Distribute the valence electrons to form bonds between the central carbon atom and the four surrounding atoms (2 Cl and 2 F). Each bond represents 2 electrons.

Check the octet rule for each atom. Carbon typically forms 4 bonds to complete its octet without lone pairs. Chlorine and fluorine atoms usually form one single bond and have three lone pairs each.

Confirm that the Lewis structure shows carbon with four single bonds (two to chlorine and two to fluorine) and no lone pairs on carbon, while each halogen has three lone pairs, satisfying the octet rule.