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  4. Assertion: Both π(2px) and π* (2px)MO’s have one nodal plane each. Reason: All MO’s formed by side way overlapping of 2p-orbitals have one nodal plane.

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Q. Assertion : Both $\pi\left(2p_{x}\right)$ and $\pi^* \left(2p_{x}\right)MO’s$ have one nodal plane each.
Reason : All $MO’s$ formed by side way overlapping of $2p$-orbitals have one nodal plane.

AIIMSAIIMS 2017Chemical Bonding and Molecular Structure

Solution:

$\pi\left(2 p_{x}\right)$ has one nodal plane whereas $\pi^{*}\left(2 p_{x}\right)$ has two nodal planes.