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Chemistry-Molecular Orbital Theory

NEET Chemistry Molecular Orbital Theory MCQ Question

Type: MCQ-diagram based-Easy-Class 11

Consider a diagram depicting the formation of molecular orbitals from 1s atomic orbitals of two atoms. If the diagram shows one orbital with a nodal plane and one without, how are these orbitals labeled?

Question diagram
A

σ and σ*

B

π and π*

C

σ* and σ

D

π* and π

Correct Answer

Option A

Detailed Explanation

The orbital without a nodal plane is the bonding molecular orbital (σ), and the one with a nodal plane is the antibonding molecular orbital (σ*). This is due to constructive and destructive interference of electron waves, respectively.

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