Electronic configuration of potassium

By Rebecca
1 Min Read

The electron configuration for potassium in the ground state:

(A) 1s22s22p63s23p61s22s22p63s23p6

(B) 1s22s22p63s23p64s21s22s22p63s23p64s2

(C) 1s22s22p63s23p64s11s22s22p63s23p64s1

(D) 1s21s2

(E) 1s22s22p63p1

Answer:

(C) 1s22s22p63s23p64s11s22s22p63s23p64s1

Explanation:

The electron configuration for potassium in the ground state

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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