Chemistry, Hybrid Orbital Question?

Question

A carbon atom forms four bonds to the unspecified number of other atoms. To form these
bonds, the carbon atom uses a combination of hybrid and/or atomic orbitals. Which of the following
combinations of orbitals is not possible?


a) sp2, sp2, sp2, sp5
b) sp2, sp2, sp5, sp5
c) sp3, sp3, sp, p
d) sp3, sp3, sp2, sp5
e) sp2, sp2, sp2, p


I really need an explanation as well.

Answer 1

a, b, and d are impossible, because there is no sp5 hybridization or orbital. c is impossible, because there aren't enough p-orbitals for those orbitals.

The only possible one is e, because you use three sp2-orbitals to form three bonds with the p-orbital overlapping with that of the next atom to form the second bond of a double bond.