AP Chemistryeasymcq1 pt
How many valence electrons are used in the Lewis structure of H₂O?
A.8
B.6
C.10
D.4
Explanation
Core Concept
Oxygen contributes 6 valence electrons and each hydrogen contributes 1, for 6 + 1 + 1 = 8. They fill the two O–H bonding pairs and oxygen's two lone pairs.
Correct Answer
A8
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