Electronic configuration of potassium

By Rebecca Published November 11, 2022

The electron configuration for potassium in the ground state:

(A) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}$

(B) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2}$

(D) $1 s^{2}$

(E) $1 s^{2} 2 s^{2} 2 p^{6} 3 p^{1}$

Answer:

Explanation:

The electron configuration for potassium in the ground state
$1 s^{2} 2 s^{2} p^{6} 3 s^{2} 3 p^{6} 4 s^{1}$
Potassium is s block alkali metal with atomic number 19. Thus it has 19 electrons in the atom. The last electron enters the 4s orbital.

Electronic configuration of potassium

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Rebecca June 16, 2023 June 16, 2023

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