The correct electronic configuration of potassium is,

Options

A. `Is^(2), 2s^(2) ,2p^(6),3s^(1)`
B. `1s^(2), 2s^(2), 2p^(6), 3s^(2), 3p^(6), 4s^(2)`
C. `1s^(2), 2s^(2), 2p^(6), 3s^(2),3p^(5),4s^(2)`
D. `1s^(2), 2s^(2),2p^(6), 3s^(2), 3p^(6), 4s^(1)`.

Answer

(d)

Explanation

The electronic configuration of potassium `K_(19)` is `1s^(2), 2s^(2),2p^(6), 3s^(2), 3p^(6), 4s^(1)`.