Question

The stability of the following carbocation decreases in the order:

• A. IV > III > II > I
• B. IIV > II > III > I
• C. IV > II > I > III
• D. IV > I > II > III

Answer 1

The correct option is C IV > II > I > III

Order of stability:

$Aromatic(4n+2)\pi e^{-}>Non-aromatic>Anti-aromatic4n\pi e^{-}$

Among aromatic species, one with higher no. of stable resonating structures is more stable.

Stability order of the given compounds:

$IV>II>I>III$

Hence, Option "C" is the correct answer.