The correct order of stability for the following superoxides is:
A
KO2>RbO2>CsO2
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B
RbO2>CsO2>KO2
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C
CsO2>RbO2>KO2
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D
KO2>CsO2>RbO2
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Solution
The correct option is CCsO2>RbO2>KO2 Larger the size of the cation, more is the stability of superoxides, because a larger cation can allow O2−2 to react with O2 to form superoxide.
The correct stability order for superoxide is : CsO2>RbO2>KO2