Give the set of four quantum numbers that could represent the last electron added (using the Aufbau principle) to the Cl atom.
A) n = 3, l = 1, ml = 1, ms = +
B) n = 3, l = 0, ml = 1, ms = -
C) n = 3, l = 2, ml =1 , ms = +
D) n = 2, l = 1, ml = 1, ms = -
E) n = 3, l =2 , ml = 1, ms = -
Answer: A