Question

Assertion :$\pi \left(2P_x\right)$ and ${\pi }^{\ast }\left(2P_x\right)$ MO's have one nodal plance each. Reason: All MO's formed by side way overlapping of 2p-orbitals have one nodal plane.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is D Both Assertion and Reason are incorrect

$\pi \left(2P_x\right)$ and ${\pi }^{\ast }\left(2P_x\right)$ MO's have one and two nodal planes respectively.
All bonding MO's formed by side way overlapping of 2p-orbitals have one nodal plane.
All antibonding MO's formed by side way overlapping of 2p-orbitals have two nodal planes.
Both Assertion and Reason are incorrect.