JEE Advanced 2022 Chemistry question

For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two orbitals is(are)

(A) orbital has a total of two nodal planes.Correct
(B) orbital has one node in the -plane containing the molecular axis.
(C) orbital has one node in the plane which is perpendicular to the molecular axis and goes through the center of the molecule.
(D) orbital has one node in the -plane containing the molecular axis.Correct

Answer: (A),(D)

Solution

Head-on overlap of two orbitals (molecular axis along ) gives and . The bonding MO keeps the nodal plane of each orbital, one behind each nucleus perpendicular to the axis – two nodal planes in all: (A) correct. The MO has an additional node perpendicular to the

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Question ID VK-033998