Question

Geometry of reaction intermediate in $S_{N}1$ reaction is

• A. tetrahedral
• B. planar
• C. triangular bipyramidal
• D. None of the above

Answer 1

Answer: (B)

$S_{N}1$ reaction is a two step reaction. In the first step of the reaction intermediate carbocation is formed which is in $s{p}^2$ hybridised state, hence the geometry of the reaction intermediate is planar.