Question

For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap to two $2 p_z$ orbitals is(are)

• A. $\sigma$ orbital has a total of two nodal planes.
• B. $\sigma^*$ orbital has one node in the $x z$-plane containing the molecular axis.
• C. $\pi$ orbital has one node in the plane which is perpendicular to the molecular axis and goes through the center of the molecule.
• D. $\pi^*$ orbital has one node in the $x y$-plane containing the molecular axis.

Answer 1

Answer: (A), (D)

$\sigma$ orbital has a total of two nodal planes.

Answer 2

A)
B)
C)
D)

So the correct answer is Option(A) and (D) :σ orbital has a total of two nodal planes and $π^*$orbital has one node in the $xy$-plane containing the molecular axis.