Which of the following statements

Question:

Which of the following statements about $\mathrm{Na}_{2} \mathrm{O}_{2}$ is not correct?

  1. $\mathrm{Na}_{2} \mathrm{O}_{2}$ oxidises $\mathrm{Cr}^{3+}$ to $\mathrm{CrO}_{4}^{2-}$ in acid medium

  2. It is diamagnetic in nature

  3. It is the super oxide of sodium

  4. It is a derivative of $\mathrm{H}_{2} \mathrm{O}_{2}$


Correct Option: , 3

Solution:

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