Question

Electronic configuration of an element is 2,8,1.Find the no.of shell and period no.of this element.What is the relation between them?

Answer 1

Answer:

The first shell can have only 2 electrons , the second eight and the third also is taken as eight . Since the electronic configuration is given as 2,8,1 that means there are 3 shells so the number of shells is 3 . The period number is three as the number of shells is 3 .

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