Ba
56 alkaline earth metal Generated with AI
Barium
Symbol Ba
Atomic Mass 137.3277
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.
Properties
- Phase: Solid
- Density: 3.51 g/cm³
- Melting Point: 1000 K
- Boiling Point: 2118 K