Question

The increasing order of the reactivity of the following halides for the $S_N1$ reaction is
(1) (III) < (II) < (I)
(2) (II) < (I) < (III)
(3) (I) < (III) < (II)
(4) (II) < (III) < (I)

Answer 1

The increasing order of the reactivity of the following halides for the $S_N1$ reaction is

(1) (III) < (II) < (I)

(2) (II) < (I) < (III)✔️✔️✔️

(3) (I) < (III) < (II)

(4) (II) < (III) < (I)

Answer 2

$\mathfrak{\huge{\red{ANSWER}}}$

The increasing order of the reactivity of the following halides for the $S_N1$ reaction is

(1) (III) < (II) < (I)

(2) (II) < (I) < (III)♥️♥️

(3) (I) < (III) < (II)

(4) (II) < (III) < (I)