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Aufbau Principle

ns1 electroni...

Question

$n s^{1}$ electronic configuration is not present in:

A

Ag

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B

Mn

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C

Cr

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D

Cu

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Solution

The correct option is B Mn
Manganese (Mn) has $n s^{2}$ electronic configuration.

The electronic configuration of Manganese is

$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{5} 4 s^{2}$ .

Option B is correct.

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