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 represents the correct Lewis dot structure for sodium fluoride (NaF), a neutral compound?

Na with no dots and F with eight dots, separated by a single bond

Na and F both with eight dots, connected by a double bond

Na with one dot and F with seven dots, connected by a single bond

Na with no dots and F with eight dots, with Na and F shown as separate ions: Na^+ and F^-

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Verified step by step guidance

Step 1: Identify the types of elements involved and their typical behavior in bonding. Sodium (Na) is a metal and tends to lose one electron to form a Na⁺ ion, while fluorine (F) is a nonmetal and tends to gain one electron to form an F⁻ ion.

Step 2: Determine the number of valence electrons for each atom. Sodium has 1 valence electron, and fluorine has 7 valence electrons.

Step 3: Understand that sodium will lose its one valence electron, resulting in no dots around Na (since it becomes Na⁺), and fluorine will gain that electron to complete its octet, resulting in 8 dots around F (as F⁻).

Step 4: Recognize that the bonding in sodium fluoride is ionic, not covalent, so the Lewis structure should show Na⁺ and F⁻ as separate ions rather than connected by shared electron dots or bonds.

Step 5: Conclude that the correct Lewis structure for NaF shows Na with no dots (Na⁺) and F with eight dots (F⁻), indicating the transfer of one electron from Na to F and the formation of ions.