When ψA and ΨB are the wave functions of atomic orbitals

Question

When \(\psi _A\) and \(\Psi _B\) are the wave functions of atomic orbitals, then \(\sigma ^*\) is represented by :

(1) \(\psi _ A - 2 \psi _B\)

(2) \(\psi _ A - \psi _B\)

(3) \(\psi _A + 2\psi _B\)

(4) \(\psi _A + \psi _ B\)

Answer 1

Correct option is (2) \(\psi _ A - \psi _B\)

Antibonding molecular orbitals are formed by destructive interference of wave functions.

(ABMO) \(\sigma ^* = \psi _ A - \psi _B\)