# What sort of metal is barium?

$\text{Barium is an alkaline earth metal......}$
Barium is an alkaline earth metal; i.e. it is in Group 2 of the Periodic Table. Barium thus has 2 valence electrons, and it typically forms $B a {X}_{2}$ salts, as does magnesium. $B a {\left(N {O}_{3}\right)}_{2}$, $B a C {O}_{3}$, $B a S {O}_{4}$ are all typical barium salts.