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In the ground state, an element has 13 e...

In the ground state, an element has `13` electrons in its `M` shell. The element is

A

Copper

B

Chromium

C

Nickel

D

Iron

Text Solution

Verified by Experts

The correct Answer is:
B
13 electrons in M (3rd) shell means `3s^(2) 3p^(6) 3d^(5)` There are two elements with such electronic configuration, in ground state. `Cr (Z = 24)` and Mn (Z = 25).
As manganese is not given as one of the correct option, therefore correct answer is chromium.
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