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Which of the following is correct with respect to –I effect of the substituents? (R = alkyl)
Explanation
–I effect follows electronegativity: N < O < F.
Detailed Solution
–I effect increases on increasing electronegativity of the atom.
So, the correct order of –I effect is $-NH_2 < -OR < -F$.
Note: the source key marks $-NH_2 < -OR < -F$ as the most appropriate answer, but states that $-NR_2 < -OR < -F$ may also be correct.