Which is not paramagnetic
${O_2}$
$O_2^ + $
$O_2^{2 - }$
$O_2^ - $
In the synergic bond of metal carbonyls
Which one is paramagnetic from the following
The total number of anti bonding molecular orbitals, formed from $2 \mathrm{~s}$ and $2 \mathrm{p}$ atomic orbitals in a diatomic molecule is_______
In which of the following transformations, the bond order has increased and the magnetic behaviour has changed?
According to molecular orbital theory, the paramagnetism of ${O_2}$ molecule is due to presence of