56Ba
Element 56
Barium
Alkaline earth
Barium is a chemical element with symbol Ba and atomic number 56.
Key data
- Atomic number
- 56
- Atomic mass
- 137.328 u
- Group / Period
- 2 / 6
- Block
- s-block
- Phase at STP
- Solid
- Density
- 3.51 g/cm³
- Melting point
- 726.9 °C
- Boiling point
- 1844.8 °C
- Electron configuration
- [Xe] 6s2
Common uses
- •X-ray contrast agent
- •Green fireworks
- •Drilling muds
Discovery
Year: 1808
Discovered by: Carl Wilhelm Scheele
Frequently asked questions
What is the atomic number of Barium?
Barium has atomic number 56. Its symbol is Ba and its atomic mass is 137.328 u.
What category of element is Barium?
Barium is classified as alkaline earth. It sits in group 2, period 6 of the periodic table.
What is Barium used for?
Common uses of Barium include: X-ray contrast agent, Green fireworks, Drilling muds.
When was Barium discovered?
Barium was discovered in 1808 by Carl Wilhelm Scheele.
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