The electrophile in the sulphonation of arenes is

Electrophile in the sulphonation of benzene is

The electrophile in the nitration of arenes is

The electrophile in sulphonation of benzene is

The electrophile in halogentation of arenes is (i). X_(2) (ii). X^(+) (iii). X^(delta+)….X….overset(delt-)(A)IX_(3) (iv). X

The electrophile involved in the sulphonation of benzene is :