Which of the following diatomic molecule would be stabilised by the removal of an electron ? .

Options

A. `C_(2)`
B. CN
C. `N_(2)`
D. `O_(2)`

Answer

D

Explanation

In `O_(2)` molecule, two electrons are present in antibonding orbitals `O_(2) (8+8=16) sigma 1s^(2), sigma^(**) 1s^(2), sigma 2s^(2) sigma^(**) 2s^(2), sigma^(2) 2pz^(2), pi 2px^(2) = pi 2py^(2), pi^(**) 2px= pi^(**) 2py^(1)`
Removal of one electron from the `O_(2)` molecule given `O_(2)^(+)` in which the number of antibonding electrons is one less and hence, BO increases. Thus, removal of one electron from `O_(2)` stabilises the molecules.