Chemistry, asked by 274amritt, 1 year ago

Why the number of elements in third group is 8 & in 4th group it is 18?

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Answered by Abarrane
2
It is according to the 2n² rule the maximum number of electrons in the third period should be 2*3²=18 But the last shell cannot accomodate more than 8 electrons.Therefore the number of electrons in the third period is 8
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Answered by mansi9
0
it's according to the 2n square rule... where n=no. of shells
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