Elements that have a valence-level electron configuration of s²p² are in group 14 of the periodic table, also known as the carbon group. Therefore, the other elements in group 14 (besides carbon) also have this valence electron configuration. These elements are:
Silicon (Si)
Germanium (Ge)
Tin (Sn)
Lead (Pb)
All of these elements have two electrons in the s orbital and two electrons in the p orbital of their outermost energy level, giving them similar chemical properties to carbon.