What is the maximum number of electrons that can be accommodated in th

What is the maximum number of electrons that can be accommodated in the M shell of an atom?

Answer is Right!

Answer is Wrong!

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UPSC Geoscientist – 2022

The correct answer is 18.

The maximum number of electrons that can be accommodated in an electron shell is given by the formula 2n², where ‘n’ is the principal quantum number of the shell.

Electron shells are denoted by K, L, M, N, … corresponding to principal quantum numbers n = 1, 2, 3, 4, … respectively. For the M shell, n=3. Therefore, the maximum number of electrons in the M shell is 2 * (3)² = 2 * 9 = 18.

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