Which of the following statement is not correct from the view point of molecular orbital theory?

Options

A. `Be_(2)` is not a stable molecule.
B. `He_(2)` is not stable but `He_(2)^(+)` is expected to exist.
C. Bond strength of `N_(2)` is maximum amongst the homonuclear diatomic molecules belonging to the second period.
D. The order of energies of molecular orbitals in `N_(2)` molecule of
`sigma_(2s)ltsigma_(2s)^(**)lt (pi_(2px)=pi_(2px))lt"("pi_(2px)^(**)-pi_(2px)^(**)")"`

Answer

D

Explanation

It is not correct statement.
The correct order is :
`[sigma_(2s)],[sigma_(2s)^(**)][pi_(2px)]=[pi_(2py)][sigma_(2pz)]`