Among the diazonium ions the order of reactivity towards diazocoupling with phenol in the presence of dilute `NaOH` is .

Options

A. `IIIltIltIVltII`
B. `IltIVltIIltIII`
C. `IltIIIltIVltII`
D. `IIIltIltIIltIV`

Answer

C

Explanation

Since `(B)` is the reactive contributing resonance structure any factore that increases its contribution will increases the reactivity of that diazonium cation Electron withdrawing groups `(NO_(2))` favour `(B)` while electron releasing groups favour (A) thus the order of reactivity is II lt IV lt III lt I Notice that the order of electron releasing power is `Me_(2)NgtCH_(3)OgtCH_(3))`
.