Number of paramagnetic oxides among the following given oxides is ..... .
$\mathrm{Li}_{2} \mathrm{O}, \mathrm{CaO}, \mathrm{Na}_{2} \mathrm{O}_{2}, \mathrm{KO}_{2}, \mathrm{MgO}$ and $\mathrm{K}_{2} \mathrm{O}$
$1$
$2$
$3$
$0$
In the following the correct bond order sequence is :
Which is set of paramagnetic molecules or ions
Atomic number of an element is $26.$ The element shows
Which one of the following pairs of species have the same bond order ?
The paramagnetic nature of oxygen molecule is best explained on the basis of