transition metals + electronic configuration

which shows the electron configuration of an atom of a transition metal?
a) [Ar] 4s2 3d0
b) [Ar] 4s2 3d8
c) [Ar] 4s2 3d10
d) [Ar] 4s2 3d10 4p1
The answer is B, i'm confused to as how the answer could not be c as well? any help appreciated! thanks

Reply 1

Teruko

The d orbital is full so the electrons cannot jump between the energy levels, so the element does not have variable oxidation state, so is not a transition metal

(Also it's the config for Zinc, which is not a transition metal)