The electronic configuration of phosphorus atom is 2, 8, 5. Give the electronic configuration of P3- ion

The electronic configuration of phosphorus atom is 2, 8, 5. Give the electronic configuration of P3- ion.

Answer:
Electronic configuration of P = 2, 8, 5
P atom gains 3e- to form P3-
.’. P3- has configuration = 2, 8, (5 + 3) = 2, 8, 8