MCQ
Which of the following is not paramagnetic
- A${O_2}$
- B$O_2^{1 + }$
- ✓$O_2^{2 - }$
- D$O_2^ - $
✓
Answer
Correct option: C.
$O_2^{2 - }$
(c) Species with unpaired electrons is paramagnetic ${O_2}$ has $2$ unpaired electrons,
$O_2^ - $ has one unpaired, $O_2^{2 - }$ has zero unpaired electrons, $O_2^{1+ }$ has one unpaired.
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