Paper: CSIR-NET June 2019 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Marks: 2 · Difficulty: Medium
Among the following, the correct statement about $\pi$-molecular orbitals ( $\pi$-MOs) of benzene is
(a)Only the lowest energy MO is doubly degenerate
(b)Only LUMO is doubly degenerate
(c)Only HOMO is doubly degenerate
(d)Both the HOMO and LUMO are doubly degenerate
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Benzene's π MOs are a₂u (lowest), e₁g (HOMO, doubly degenerate), e₂u (LUMO, doubly degenerate) and b₂g.