Question

How to know period, block and group in sub shell electronic configuration

Answer 1

Answer:

Prediction of Block ⟶ The orbital out of s,p,d and f which receives the last electron represents the block of an element. Prediction of Group ⟶ The group prediction occurs with the help of block as:- (2) For d block: Group Number = Number of e− in (n−1)d subshell + number of e− in ns subshell.

Explanation:

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