Home » Among KO2, AlO−2, BaO2 and NO+2 unpaired electron is present in Chemical Bonding MCQs Among KO2, AlO−2, BaO2 and NO+2 unpaired electron is present in April 11, 2022 12 Views Q. Among KO2, AlO−2, BaO2 and NO+2 unpaired electron is present in NO+2 and BaO2KO2 and AIO−2KG2 onlyBaO2 only Answer: KG2 only