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Which of the following bonds will be most polar?

1. N—Cl
2. O—F
3. N—F
4. N—N

Correct answer: N—F

Solution

The polarity of a bond depends on the electronegativity difference between the two atoms. Fluorine is the most electronegative element, and the N—F bond has a significant electronegativity difference, making it the most polar among the options.

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