MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic Chemistrys- Block 3.0Previous Year Questions

The correct order of stability for the following superoxides is (EAMCET 2008)

A.KO₂ > RbO₂ > CsO₂

B.RbO₂ > CsO₂ > KO₂

C.CsO₂ > RbO₂ > KO₂✓ Correct

D.KO₂ > CsO₂ > RbO₂

Explanation

As we move down the group the lattice energy and stability of the metal superoxides will increases. This is because the increase in the size of the cation increases the compatibility with this large superoxide anion.

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