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 Ph$_2$Br (diphenyl bromide)?

The bromine atom is bonded to two phenyl groups and has no lone pairs.

The bromine atom is bonded to two phenyl groups and has one lone pair.

The bromine atom is bonded to one phenyl group and has two lone pairs.

The bromine atom is bonded to two phenyl groups and has three lone pairs.

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Verified step by step guidance

Step 1: Identify the molecular formula and structure components. Ph$_2$Br (diphenyl bromide) consists of two phenyl groups (Ph) and one bromine (Br) atom. Each phenyl group is a benzene ring attached via a single bond to another atom or group.

Step 2: Determine the bonding preferences of bromine. Bromine is a halogen in Group 17 and typically forms only one single covalent bond because it has seven valence electrons and needs one more to complete its octet.

Step 3: Analyze the bonding in Ph$_2$Br. Since bromine can only form one bond, it can be bonded to only one phenyl group, not two. Therefore, the bromine atom is bonded to one phenyl group.

Step 4: Count the lone pairs on bromine. Bromine has seven valence electrons; one is used in bonding with the phenyl group, leaving six electrons as three lone pairs on bromine.

Step 5: Conclude the correct Lewis structure description. The bromine atom is bonded to one phenyl group and has three lone pairs, which satisfies the octet rule and the bonding preferences of bromine.