Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by P.

Question

Charge: -3

And I got 1s²2s²2p⁶3s²3p³ for the ground-state electron configuration, but it is incorrect. What does ground state configuration mean?

Answer 1

P: 1s²2s²2p⁶3s²3p³

P^3- gains 3 electrons: 1s²2s²2p⁶3s²3p⁶

That should be the most likely ion. If it's wrong, it's P⁵⁺ 1s²2s²2p⁶