A) \[K{{O}_{2}}>Rb{{O}_{2}}>Cs{{O}_{2}}\]
B) \[~Rb{{O}_{2}}>Cs{{O}_{2}}>K{{O}_{2}}\]
C) \[Cs{{O}_{2}}>Rb{{O}_{2}}>K{{O}_{2}}\]
D) \[K{{O}_{2}}>Cs{{O}_{2}}>Rb{{O}_{2}}\] With progressive increase in the size of alkali metal ions, the stability of superoxides increases
Correct Answer: C
Solution :
because the size of superoxide ion is large and large cation can be stabilised more by large anion. Hence, the order of stability of superoxides of alkali metals is\[\text{Cs}{{\text{O}}_{2}}>Rb{{O}_{2}}>K{{O}_{2}}\]
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