The electronic configuration of atomic number 20 of an atom is which of the following?

Q. The electronic configuration of atomic number 20 of an atom is which of the following?

A.            2, 6, 6, 2

B.            2, 8, 8, 2

C.            2, 4, 6, 2

D.            2, 4, 6, 2

Answer: 2, 8, 8, 2