MCQ
Which of the following statement is not correct from the view point of molecular orbital theory?
- A$\ce{Be_2}$ is not a stable molecule.
- B$\ce{He_2}$ is not stable but is expected to exist.
- CBond strength of $\ce{N_2}$ is maximum amongst the homonuclear diatomic molecules belonging to the second period.
- ✓The order of energies of molecular orbitals in $N_2$ molecule is $\sigma\ 2\text{s} < \sigma^{\star}\ 2\text{s}< \sigma\ 2\text{pz} < (\pi\ 2\text{px}=\pi\ 2\text{p}_{\text{y}}) $$ < (\pi^{\star}\ 2\text{p}_{\text{x}}=\pi^{\star}\ 2\text{p}_{\text{y}}) < \sigma^{\star}\ 2\text{p}_{\text{z}}$
