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Question

The maximum number of electrons that can be accommodated in a shell is given by the formula .

A
n2
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B
2n2
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C
n2+1
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Solution

The correct option is B 2n2
The electrons revolve around the nucleus in discrete shells. The shells are called energy levels. The maximum number of electrons the nth shell of an element can accomodate is given by the formula 2n2, where n is the energy level (n =1,2,3...).

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