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4.Chemical Bonding and Molecular Structure
medium
Maximum unpaired electrons are present in
A
$O_2$
B
$O_2^-$
C
$O_2^+$
D
$O_2^{2-}$
Solution
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:
$1 s ^2 * 1 s ^2 2 s ^2 * 2 s ^2 2 pz ^2 2 px ^2 2 py ^2 * 2 px ^2 * 2 py ^2$
Standard 11
Chemistry
