Question

Elements whose atoms have there s-subshell incomplete are called:

• A. s-block
• B. p-block
• C. d-block
• D. f-block

Answer 1

The correct option is A s-block

Elements whose atoms have there s-subshell incomplete are called s- block elements.

Eg- $Li$ - $1s^{2}2s^1$

$Na$ - $1s^{2}2s^{2}2p^{6}3s^1$