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JEE Main levelSingle correct optionDifficulty 2 of 3cb130

The number of nodal planes in the $π^{*} 2 p_{x}$ antibonding molecular orbital of a homonuclear diatomic molecule (internuclear axis along $z$ ) is

A3
B0
C1
D2

Answer: D

A

π^{*}

orbital has one nodal plane containing the internuclear axis (the

yz

plane) and a second nodal plane perpendicular to the axis, between the nuclei. Total = 2.

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