Name of elements with atomic numbers greater than 100 are given by IUPAC Why is potassium considered as an s - block element ?

Explanation

The electronic configuration of potassium is : `K(19):1s^2 2s^2 2p^26 3s^2 3p^6 4s^1 or [Ar] s^1` since the last electron enters the s-orbital of the outermost energy level, potassium is considered as an s-block element