Find the odd element from the given electronic configuration.

Find the odd element from the given electronic configuration.

1. A

$1{s}^{2}2{s}^{2}2{p}^{6}3{s}^{1}$

2. B

$1{s}^{2}2{s}^{2}$

3. C

$1{s}^{2}2{s}^{2}2{p}^{6}3{s}^{2}3{p}^{1}$

4. D

$1{s}^{2}2{s}^{2}2{p}^{6}3{s}^{2}3{p}^{6}4{s}^{1}$

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Solution:

A, B, and D's electrical configurations match that of s-block components. The d-block element C has the same electrical arrangement as that element.

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