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Predict the order of reactivity of the f...

Predict the order of reactivity of the following halides with (a) NaI in acetone
(b) aq.alcoholic `AgNO_3`
(i) `CH_3Br`
(ii) `C_2H_5Br`
(iii) `PhCH_2Br`
(iv) .

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Verified by Experts

(a) `(i) gt (ii) gt (iii) gt (iv) (SN^2)`
(b) `(iii) gt (ii) gt (i) gt (iv) (SN^1)`.
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