Which of the following is the electronic configuration of sodium?
(Atomic number of Na = 11)
1s2 2s22p6 3s2
1s2 2s22p6 3s2 3p1s2 2s22p6 3s1
1s2 2s22p6 3s1
1s2 2s22p6 3s°
1s2 2s22p6 4s1
Correct answer is C
No explanation has been provided for this answer.