The figures show two different possible combinations of two 2p atomic orbitals with phases to form a molecular orbital. For each of these figures

a. identify whether it represents constructive or destructive addition of the two atomic orbitals, and

b. identify whether the resulting molecular orbital will be a 𝜎, 𝜎∗, 𝜋, or 𝜋∗ MO. [Section 9.8]