The correct order of increasing reactivity of C-X bond towards is nucleophic ,the following compound is

Options

A. III `lt` II `lt`I`lt` IV
B. I `lt`II`lt` IV`lt` III
C. II `lt` III `lt` I `lt` IV
D. IV `lt` III `lt` I `lt` II

Answer

B

Explanation

Alkyl halides are more reactive than aryl halides. Among alkyl halides,` 3^@` alkyl halides (Ill) are more reactive than `2^@` alkyl halides (IV).Among aryl halides, aryl halides having electron withdrawing-`NO_2` groups at o -and p-positions (i.e., II) are more reactive than simple aryl halides(I). Thus, the overall reactivity increases in the order: I< II