## Chemistry: A Molecular Approach (3rd Edition)

$[Ne]3s^{2}3p^{3}$ $[Ne]3s^{2}3p^{6}$ or $[Ar]$
Write the electron configuration for an uncharged P atom. Three electrons must be added to P to form the ion $P^{3-}$. Add these electrons to its energy level and change the corresponding electron configuration.