Pentium 3s

What is the correct electron configuration (spdf notation) for P3-?

My guess is 1s2 2s2 2p6 3s2 3p6, because P3- should have 18 electrons, right?

Public Comments

1. yes .... ground state electronic configuration of Patomic number 15 ) is 1s2 2s2 2p6 3s2 3p3 ,here the 3p subshell is empty(as there are 6 electrons in any p subshell but here only 3) ....so when it will accept 3 electron and become P3- the extra electrons will go to empty 3p orbitals first....then to 3d and so on....this takes place in accordance to Aufbau principle ....