The order of stability for the following superoxides is
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a
KO2>RbO2>CsCO2
b
RbO2>CsO2>KO2
c
CsO2>RbO2>KO2
d
KO2>CsO2>RbO2
answer is C.
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Detailed Solution
Superoxides are stable only for the heavier alkali metals. Caesium Superoxide is most stable. The lattice energy of caesium Superoxide is highest among Superoxide. This can be explained based on higher coordination number of caesium cation