Question: Which of the following statements about $\mathrm{Na}_{2} \mathrm{O}_{2}$ is not correct?
$\mathrm{Na}_{2} \mathrm{O}_{2}$ oxidises $\mathrm{Cr}^{3+}$ to $\mathrm{CrO}_{4}^{2-}$ in acid medium
It is diamagnetic in nature
It is the super oxide of sodium
It is a derivative of $\mathrm{H}_{2} \mathrm{O}_{2}$
Correct Option: , 3
Solution:
