Among KO2,AlO2−,BaO2 and NO+2 unpaired electron is present in
NO2+ and BaO2
KO2 and AlO2-1
KO2 only
BaO2 only
AlO−12,BaO2 & NO+2 has paired electrons
Among KO2,AlO2−,BaO2,NO2+ unpaired electron is present in: