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Electron Distribution in Different Orbits

In magnesium,...

Question

In magnesium, the number of electrons in $K$ shell is:

A

2

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B

8

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C

3

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D

1

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Solution

The correct option is A $2$
Atomic number of $M g$ is $12$ . So, the number of electrons in the different shells is:
$K = 2, L = 8, M = 2$ .

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