Question

What is the order of decreasing stability of following carbocations?
$\underset{I}{(C{H}_3{)}_3}\stackrel{\oplus }{C}\underset{II}{(C{H}_3{)}_2}\stackrel{\oplus }{CH}\underset{III}{C{H}_3}\stackrel{\oplus }{C{H}_2}\underset{IV}{\stackrel{\oplus }{C{H}_3}}$

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

Answer 1

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

Stability of carbocations varies as:
$3^{\circ }>2^{\circ }>1^{\circ }>-\stackrel{\oplus }{C{H}_3}$