AmongKO_(2), AlO_(2)^(-), BaO_(2) and NO_(2)^(+), unpaired electrons is present in

AmongKO_(2), AlO_(2)^(-), BaO_(2) and NO_(2)^(+), unpaired electrons i

1.	AmongKO_(2), AlO_(2)^(-), BaO_(2) and NO_(2)^(+), unpaired electrons is present in
Answer» `NO_(2)^(+)` and `BaO_(2)` `KO_(2)` and `AlO_(2)^(-)` `KO_(2)` only `BaO_(2)` only. Solution :A superoxide ion `O_(2)^(-)` (in `KO_(2)`) contains UNPAIRED electron.