Which one of the following statements is incorrect related to Molecular Orbital Theory?

Which one of the following statements is incorrect related to Molecular Orbital Theory?
  1. Molecular orbitals obtained from $2 \mathrm{p}_{\mathrm{x}}$ and $2 \mathrm{p}_{\mathrm{y}}$ orbitals are symmetrical around the bond axis.
  2. A $\pi$-bonding molecular orbital has larger electron density above and below the internuclear axis.
  3. The $\pi^*$ antibonding molecular orbital has a node between the nuclei.
  4. In the formation of bonding molecular orbital, the two electron waves of the bonding atoms reinforce each other.

Solution

- According to molecular orbital theory, the sigma $(\sigma)$ molecular orbitals are symmetrical around the bond-axis while pi $(\pi)$ molecular orbitals are not symmetrical. As $z$-axis is taken as internuclear axis, $2 p_x$ and $2 p_y$ forms $\pi$ molecular orbitals, hence these are unsymmetrical around the bond-axis

Asked in: NEET 2023 (Manipur)

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