MCQ
Maximum unpaired electrons are present in
- ✓$O_2$
- B$O_2^-$
- C$O_2^+$
- D$O_2^{2-}$
✓
Answer
Correct option: A.
$O_2$
a
The electronic configuration of the $O _2$ containing $16$ electrons can be written as:
The electronic configuration of the $O _2$ containing $16$ electrons can be written as:
$1 s ^2 * 1 s ^2 2 s ^2 * 2 s ^2 2 pz ^2 2 px ^2 2 py ^2 * 2 px ^1 * 2 py ^1$
The electronic configuration of the $O _2^{+}$containing $16$ electrons can be written as:
$1 s ^2 * 1 s ^2 2 s ^2 * 2 s ^2 2 pz ^2 2 px ^2 2 py ^2 * 2 px ^1 * 2 py ^0$
The electronic configuration of the $O _2^{-}$ion containing $17$ electrons can be written as:
$1 s ^2 * 1 s ^2 2 s ^2 * 2 s ^2 2 pz ^2 2 px ^2 2 py ^2 * 2 px ^2 * 2 py ^1$
The electronic configuration of the $O _2^{-2}$ ion containing $18$ electrons can be written as:
$1 s ^2 * 1 s ^2 2 s ^2 * 2 s ^2 2 pz ^2 2 px ^2 2 py ^2 * 2 px ^2 * 2 py ^2$
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