Q2 of 22 Page 174

How many maximum number of electrons that can be accommodated in a principle energy shell?

If n is the number of principle energy shell, then maximum number of


electrons that can be accommodated is given as 2n2 .


For first shell n = 1, so maximum number of electrons is 2(1)2 = 2


Second shell n = 2 , so maximum number of electrons is 2(2)2 = 8….so on


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