The HOMO of the allylic cation has how many electrons in its ground state?
A)1
B)2
C)3
D)4
E)0

Question

Quizplus · Accepted Answer

The HOMO (highest occupied molecular orbital) is the orbital with the highest energy that contains electrons. In the case of an allylic cation, the positive charge is delocalized among the allylic carbon atoms, creating a resonance structure with a π bond. The HOMO is therefore the π bonding orbital that is perpendicular to the plane of the molecule. This orbital has two electrons in its ground state.

The HOMO of the Allylic Cation Has How Many Electrons