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Which of the following will have the highest reactivity towards SN2 reaction, where R=methyl group?

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in Chemistry – Class 12 by (188k points)
Which of the following will have the highest reactivity towards SN2 reaction, where R=methyl group?

(a) R-F

(b) R-Cl

(c) R-Br

(d) R-I

I had been asked this question in examination.

I want to ask this question from Haloalkanes & Haloarenes in portion Haloalkanes and Haloarenes of Chemistry – Class 12

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Correct choice is (d) R-I

The best I can explain: Iodine is a better leaving groups among the halogens as it has a better ability to accommodate the negative charge.

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