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

Options

A. ` Be_2` is not a stable molecule
B. `He_2` is not stable but `He^(+)` is expected to exist
C. Bond strength of `N_2` is maximum amongest the homonuclear diatomic molecules
D. The order of energies of molecular orbitals in `F_2` molecule is `E ( sigma 2s) lt E ( sigma^(** ) 2s ) lt E ( pi 2p_x ) `
`=E(poi 2p_y ) lt E ( sigma 2p_z ) lt E ( pi^(**) 2p_x)`
`=E ( pi^(**) 2p_y) lt E ( sigma^(** ) 2p_z)`

Answer

D