Electrons in an atom revolve around the nucleus in certain discrete shells/orbits. Which of the following shells/orbits have the highest energy among all the options given?

M-shell

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N-shell

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K-shell

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L-shell

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Solution

The correct option is B N-shell
The energy of the outermost orbit of an atom is the highest. The energy of the electrons increases when the electrons move from K to L-shell, then M-shell and so on.

Among all the shells given, N-shell is the outermost shell of an atom. Therefore, N-shell has the highest energy among all the options given to us.

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