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  3. Chemistry
  4. In the reaction, M + O 2 arrow MO 2 (superoxide), the metal ( M ) is:

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Q. In the reaction, $M + O _{2} \rightarrow MO _{2}$ (superoxide), the metal $( M )$ is:

The s-Block Elements

Solution:

As the size of metal ion increase, tendency to form superoxide increase. Since; superoxide is $MO _{2}$ type, it is clear it is alkali metal superoxide. In superoxide, oxygen is in $O _{2}^{-}$ form. Hence. it is potassium superoxide $\left( KO _{2}\right)$.