(B) The assertion is correct because in a bonding molecular orbital $(MO)$, the electron density is concentrated in the region between the two nuclei,

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Assertion is correct, reason is incorrect.

(B) The assertion is correct because in a bonding molecular orbital $(MO)$, the electron density is concentrated in the region between the two nuclei, which leads to attraction and stability. The reason is incorrect because the bonding $MO$ is formed by the constructive interference of the atomic orbitals $(\psi_A + \psi_B)$, not destructive interference. Destructive interference results in an antibonding molecular orbital $(\psi_A - \psi_B)$.

Class 11 Chemistry Chemical Bonding and Molecular Structure Molecular orbital theory

Difficult

After understanding the assertion and reason, choose the correct option.
Assertion : In the bonding molecular orbital $(MO)$ of $H_2,$ electron density is increased between the nuclei.
Reason : The bonding $MO$ is $\psi_A + \psi_B,$ which shows destructive interference of the combining electron waves.

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A
Assertion is incorrect, reason is correct.
B
Assertion is correct, reason is incorrect.
C
Assertion and reason are correct and reason is the correct explanation for the assertion.
D
Assertion and reason are correct, but reason is not the correct explanation for the assertion.