Question

The most stable carbocationamong the following is :
1)C₆H_5​-CH⁺-C₆H5
2)C₆H_5​CH₂⁺
3)CH₃CH₂+
4)C₆H₅CH₂CH₂^{+
Pl. Explain.}

Answer 1

The most stable carbocation will be option (1) as carbocation is stabilised by resonating effect of two benzene ring. That is positive charge is delocalised in 2 benzene rings.

(3) and (4) is aliphatic carbocations which is less stable than aromatic one. (2) is aromatic carbocation but positive charge is delocalised only by one aromatic ring.