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 is the best Lewis dot structure for the neutral molecule BrF?

Br with one lone pair, triple bond to F (which has one lone pair)

Br with three lone pairs, single bond to F (which has three lone pairs)

Br with two lone pairs, double bond to F (which has two lone pairs)

Br with four lone pairs, single bond to F (which has two lone pairs)

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Verified step by step guidance

Step 1: Determine the total number of valence electrons for the molecule BrF. Bromine (Br) is in group 17 and has 7 valence electrons, and fluorine (F) is also in group 17 with 7 valence electrons. So, total valence electrons = 7 (Br) + 7 (F) = 14 electrons.

Step 2: Draw a skeleton structure with Br and F connected by a single bond. A single bond represents 2 electrons shared between the atoms.

Step 3: Distribute the remaining electrons as lone pairs to satisfy the octet rule for each atom. After the single bond, subtract 2 electrons from the total 14, leaving 12 electrons to be placed as lone pairs.

Step 4: Assign lone pairs to fluorine first to complete its octet (fluorine typically has three lone pairs), then assign the remaining lone pairs to bromine. Count the lone pairs on each atom to ensure both have a full octet (8 electrons total including bonding electrons).

Step 5: Verify the Lewis structure by checking that the total number of electrons used (bonding + lone pairs) equals 14, and that both atoms have a complete octet. This confirms the best Lewis dot structure for BrF.