Electronic Configuration of Calcium is K L M N
2, 8, 8, 2
But we know that M shell can accomodate 18 electrons....So why can't we write 10 in M shell ?

  • -8

It is because the maximum number of electrons that can be accomadated in the outermost shell is 8 and therefore we have to take 2 electrons out of 10 in N shell.

Hope you get it!!:))

  • 5

maximum number of electrons that can be accomodated in the M shell is 18...by the rule 2n^2

  • -3
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