Question

Among `KO_(2),ALO_(2)^(Θ)`,`BaO_(2)` and `NO_(2)^(+)`,unpaired electrons is present in .
A. `NO_(2)^(+)` and `BaO_(2)`
B. `KO_(2)` and `AlO_(2)^(-)`
C. `KO_(2)` only
D. `BaO_(2)` only

Answer 1

Correct Answer - C
Unpaired electrons are present in `KO_(2)` while others have paired electron
`NO_2^(+)` =22 electrons, `BaO_(2)`=72 electrons
`AlO_(2) =30` electrons , `KO_(2)`=35 electrons