Question
What is the possible value of angular momentum quantum number (l) for the unpaired electron in the atom of an element whose atomic number is 17?
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Answer
l = 1 for unpaired electron of Cl(17):
$1\text{s}^2\ 2\text{s}^2\ 3\text{s}^2\ 3\text{p}^2_\text{x}\ 3\text{p}^2_\text{v}\ 3\text{p}^1_\text{z}.$
$1\text{s}^2\ 2\text{s}^2\ 3\text{s}^2\ 3\text{p}^2_\text{x}\ 3\text{p}^2_\text{v}\ 3\text{p}^1_\text{z}.$
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