The Difference Between Donor and Acceptor Atoms in a Doped

Multiple Choice

The difference between donor and acceptor atoms in a doped semiconductor is that

A) the donor energy level lies halfway between the valence band and the acceptor level.
B) the donor energy level lies near the valence band and the acceptor energy level lies near the conduction band.
C) donor energy levels cannot exist unless acceptor energy levels are present.
D) the donor energy level lies near the conduction band and the acceptor energy level lies near the valence band.
E) the acceptor energy level lies halfway between the conduction band and the donor energy level.