explain the distribution of electrons in the shell
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Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.
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To find the maximum no. of electrons that can be fit into a shell, we use the formula 2n^2, where n is the no. of shell.
Eg-
K shell (n=1) --- no. of electrons would be 2(1)^2 = 2
L shell (n=2) --- no.of electrons would be 2(2)^2 = 8
M shell (n=3) --- no. of electrons would be 2(3)^2 = 18
and so on...
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