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Electron Distribution in Orbits

How many elec...

Question

How many electrons are present in M shell?

A

8

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B

18

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C

32

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D

9

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Solution

The correct option is B
18

The number of electrons in any shell is given by the formula $2 n^{2}$ where n is the number of the shell.

M is the 3rd shell.

$2 \times 3^{2}$ =18

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