# How is an electron's outer electron configuration related to its position in the periodic table?

Aug 7, 2018

Group 1 A (${s}^{1}$) has one valence electron.
Group 2 A (${s}^{2}$) has two valence electrons.
Group 8 A (${s}^{2} {p}^{6}$) has eight valance electrons.