Answer to Question #125143 in General Chemistry for Christina

Question

What is the electron configuration of P^3-?

Answer 1

the electron configuration for an atom of phosphorus is 1s²2s²2p⁶3s²3p³. In order to become an ion with a minus three charge, it must acquire three electrons—in this case another three 3p. Thus, the electron configuration for a P^3– ion is 1s²2s²2p⁶3s²3p⁶