8
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Covalent Bonding

Question 8 • IA-Chemistry A Survey of Chemistry A

Check all features below that you included in your Lewis structure.

Answer
A
correct number of H, O, and F atoms
B
oxygen as the central atom
C
line (single bond) between H and O
D
line (single bond) between O and F
E
four dots (electrons) associated with the O atom
F
six dots (electrons) associated with the F atom
G
no other lines or dots

Explanation

The Lewis structure for HOF has one H, one O, and one F, with oxygen between hydrogen and fluorine. Draw single bonds H–O and O–F; oxygen then has two lone pairs (four dots), and fluorine has three lone pairs (six dots). No additional bonds or dots are needed.

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