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Question

How many subshells are there in M shell ?

A
4
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B
3
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C
6
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D
5
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Solution

The correct option is B 3
The electron shells are labelled as K,L,M,N,O,P, and Q or 1,2,3,4,5,6, and 7.


As we go from innermost shell outwards, this number denotes the number of subshell in the shell. Electrons in outer shells have higher average energy and travel farther from the nucleus than those in inner shells.


Hence, M shell contains s,p and d subshells.

Therefore, option B is correct.

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