Chemistry, asked by ompranavsoni19p0jphp, 1 year ago

How to find period number of a given element

Answers

Answered by abhishek358

I have trick which I was studied in class tenth Is that, first you have to find its electronic configuration suppose I have aluminum so now it's e. c. is 2,8,3 so it's period is 3

abhishek358: look, how many numbers it contain horizontaly

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