56 Ba
Alkaline earth metal
Barium
Used in medical imaging.
Properties of Barium
- Atomic number (Z)
- 56
- Symbol
- Ba
- Atomic mass
- 137.33 g/mol
- Category
- Alkaline earth metal
- Group
- 2
- Period
- 6
- Electron configuration
- [Xe] 6s²
- Electronegativity (Pauling)
- 0.89
- Atomic radius
- 253 pm
- First ionization energy
- 503 kJ/mol
- Melting point
- 1000 K (726.9 °C)
- Boiling point
- 2170 K (1896.8 °C)
- Density
- 3.62 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1808
Frequently asked questions
What is Barium?
Barium (Ba) is an alkaline earth metal, element number 56 on the periodic table. Used in medical imaging.
What is the atomic number and atomic mass of Barium?
Barium has atomic number 56 and an atomic mass of about 137.33 g/mol.
What is the electron configuration of Barium?
The electron configuration of Barium is [Xe] 6s².
Where is Barium on the periodic table?
Barium sits in group 2, period 6, and is classified as a alkaline earth metal.