Which of the following set of metals have a s | vedclass

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(C) The alkali metals react with oxygen to form different types of oxides depending on their size. $Li$ forms only the monoxide $(Li_2O)$. $Na$ forms

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$K, Rb, Cs$

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(C) The alkali metals react with oxygen to form different types of oxides depending on their size. $Li$ forms only the monoxide $(Li_2O)$. $Na$ forms the peroxide $(Na_2O_2)$. $K, Rb,$ and $Cs$ have a strong tendency to form superoxides $(MO_2)$ due to the stabilization of the large superoxide anion $(O_2^-)$ by the large alkali metal cations.

Which of the following set of metals have a strong tendency to form superoxides?

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