Question

The enolic form of butanone contains
A. `12 sigma` bonds, `1pi` bond and 2 lone pairs of electrons
B. `11 sigma` bonds , `1pi` bond and 2 lone pairs of electrons
C. `12 sigma` bonds , `1pi` bond and 1 lone pairs of electrons
D. `10 sigma` bonds , `2pi` bond and 2 lone pairs of electrons

Answer 1

Correct Answer - A
`CH_(3)-underset("Keto form")(CH_(2))-overset(O)overset(||)(C)-CH_(3)hArr CH_(3)-underset("enolform")(CH_(2)-)overset( :overset(..)OH)overset(|)(C)=CH_(2)`
Enol form of butanone contains `12 sigma` bond, `1pi` bond and 2 lone pairs of electrons.