The enolic form of acetone contains:
9 σ− bonds, 1 π− bond, and 2 lone pairs.
8 σ− bonds, 2 π− bond, and 2 lone pairs.
10 σ− bonds, 2 π− bond, and 1 Ione pair.
9 σ− bonds, 2 π− bond, and 2 Ione pairs.