The energy of `sigma2p_(z)`, molecular orbital is greater than `pi2p_(x)` and `pi2p_(y)` molecular orbitals in nitrogen molecule. Write the complete sequence of energy levels in the increasing order of energy in the molecule. Compare the relative stability and the magnetic behaviour of the following species.
`N_(2), N_(2)^(+), N_(2)^(-), N_(2)^(2+)`

Explanation

`N_(2)^(+)` ion is formed when `N_(2)` molecule loses an electron from highest occupied molecular orbital. The molecular orbital configurations of the following species is:
`N_(2)^(+) "ion" = K K (sigma 2s)^(2) lt (sigma^(**) 2s)^(2) lt [(pi 2px)^(2)= (pi2 py)^(2)] lt (sigma 2pz)^(1) [K K = (sigma_(1s))^(2) (sigma_(1s)^(**))^(2)]`