Why elements of group 1 and group 2 are known as s-block elements? – InterviewSolution

1.

Why elements of group 1 and group 2 are known as s-block elements?

Answer»

The subshell in which the last electron enters decides the block to which an element belongs.
In group 1 and group 2 elements, the last electron is filled in the s subshell.

Therefore, the elements of group 1 and group 2 are known as s-block elements.

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