The increasing order of reactivity of the following halides for the `S_(N)1` reaction is
I.`CH_(3)CH(CI)CH_(2)CH_(3)`
`II . CH_(3)CH_(2)CH_(2)Cl`
III. `p. -H_(3)CO-C_(6)H_(4)-CH_(2)Cl`

The increasing order of the reactivity of the following halides for the S_(N) 1 reaction is underset((I))underset(Cl)underset(|)(CH_(3))CHCH_(2)CH_(3) " " underset((II))(CH_(3)CH_(2)CH_(2)Cl) " " underset((III))(p-H_(3)CO-C_(6)H_(4)-CH_(2)Cl

The increasing order of reactivity of the following halides for the S_(N^(1)) reaction is : CH_(3)-underset(CI)underset(|)(CH)-CH_(2)CH_(3) " " underset((II))(CH_(3)CH_(2)CH_(2)CI) underset((III))(p-H_(3)CO-C_(6)H_(4)-CH_(2)CI)