Question

yet more lewis structures
for those of you that enjoy such things, some more lewis structures to draw:

1. bsf

1. hbr

1. c₂h₅oh (ethanol)

1. n₂f₄

1. sf₆

Explanation:

Step1: Calculate total valence electrons for BSF

B:3, S:6, F:7 → Total = 3+6+7=16

Step2: Determine central atom (B, least electronegative)

B bonded to S and F; distribute electrons: B-S-F chain, B has 6e⁻, S and F complete octets

Step3: Calculate total valence electrons for HBr

H:1, Br:7 → Total = 8

Step4: Single bond H-Br, Br gets 6 lone e⁻

Step5: Calculate total valence electrons for C₂H₅OH

2C:12, 6H:6, O:6 → Total = 24

Step6: Structure: C-C-O-H, each C has 4 bonds, O has 2 lone pairs

Step7: Calculate total valence electrons for N₂F₄

2N:10, 4F:28 → Total = 38

Step8: Structure: F₂N-NF₂, each N has 3 bonds +1 lone pair, F has 3 lone pairs

Step9: Calculate total valence electrons for SF₆

S:6, 6F:42 → Total = 48

Step10: S as central, 6 single bonds to F; each F has 3 lone pairs

Answer:

1. Lewis structure: B-S-F (B: 6e⁻, S: 8e⁻, F: 8e⁻)
2. Lewis structure: H-Br (Br with 3 lone pairs)
3. Lewis structure: CH₃-CH₂-OH (O with 2 lone pairs)
4. Lewis structure: F₂N-NF₂ (each N with 1 lone pair)
5. Lewis structure: S bonded to 6 F (each F with 3 lone pairs)