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Q.

How many electrons occupy in M shell?

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a

2

b

8

c

32

d

18

answer is C.

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Detailed Solution

The maximum number of electrons in M shell is 18

The maximum number of electrons in orbit is given by formula 2n2. M is the third shell, so n = 3. Therefore 2n2 = 2X32  = 2 X9 = 18 electrons.

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