Sam Ullman ↔ Web Developer

Barium


56

Ba

Barium
137.32700
2
8
18
18
8
2

Source

Barium is a chemical element with symbol Ba and atomic number 56. It is the fifth element in Group 2, a soft silvery metallic alkaline earth metal. Because of its high chemical reactivity barium is never found in nature as a free element. It is found in the minerals euxenite and gadolinite.