Question: Among the following species, the diamagnetic molecule is
$\mathrm{O}_{2}$
$\mathrm{NO}$
$\mathrm{B}_{2}$
$\mathrm{CO}$
Correct Option: , 4
Solution:
$\mathrm{O}_{2}, \mathrm{NO}, \mathrm{B}_{2}$ are paramagnetic according to M.O.T. where as $\mathrm{CO}$ is diamagnetic.
