The enolic form of acetone contains:

Options

A. 9sigma bonds, 1 pibond and 2 lone pairs
B. 8sigma bonds, 2 pi-bonds and 2 lone pairs
C. 10 sigma bonds, 1 pi-bonds and1 lone pair
D. 9 sigma bonds,2 pi-bonds and 1 lone pair

Answer

A

Explanation

`underset("keto form")(CH_(3)-overset(O)overset(|)(C)-CH_(3))` ` underset("enolic form")(CH_(3)-overset( :overset(..)(O)H)overset(|)(C)=CH_(2))`
Number of `sigma` -bonds in enolic form =9 .
Number of `pi-`bonds in enolic form =1.
Number of lone pair of electrons is enolicform =2 ( on O atom).