AP Chemistryeasymcq1 pt
Which of these bonds involves the greatest electronegativity difference between its two atoms?
A.O-H
B.N-H
C.H-F
D.C-H
Explanation
Core Concept
Bond polarity follows electronegativity difference. Fluorine, at 4.0 on the Pauling scale, exceeds hydrogen by about 1.8, the widest gap listed. Oxygen, nitrogen, and carbon attract shared electrons progressively less strongly, so their differences with hydrogen shrink stepwise. The larger the gap, the more electron density concentrates at the nonmetal end.
Correct Answer
CH-F
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