The correct order of stability for the following superoxides is
KO2 > RbO2 > CsO2
RbO2 > CsO2 > KO2
CsO2 > RbO2 > KO2
KO2 > CsO2 > RbO2
The stability of K2O,K2O2 and KO2 is in order K2O<K2O2<KO2. The increasing stability at the size of metal ion increases is due to stabilization of:
Among [Ni(Co)4], [NiCl4]2−, [Co(NH3)4Cl2]Cl, Na2[CoF6]3+, Na2O2 and CsO2, the total number of paramagnetic compounds is