| Atomic Number: | 56 |
| Element Symbol: | Ba |
| Element Name: | Barium |
| Atomic Weight: | 137.327 |
| Group Number: | 2 |
| Group Name: | Alkaline earth metal |
| Period Number: | 6 |
| Block: | s-block |
| Ground State Configuration: | [Xe] 6s2 |
| Ground State Level: | 1S0 |
| Standard State: | Solid |
| Common Valences: | 0,2 |
| Bond Length: | 434.7 |
| Atomic Radius Empirical: | 215 |
| Atomic Radius Calculated: | 253 |
| Covalent Radius Empirical: | 198 |
| First Ionization Energy: | 502.9 |
| Pauling Electronegativity: | 0.89 |
| Sanderson Electronegativity: | 0.68 |
| Allred Rochow Electronegativity: | 0.97 |
| Mulliken Jaffe Electronegativity: | 0.88 |
| Density Of Solid: | 3510 |
| Molar Volume: | 38.16 |
| Velocity Of Sound: | 1620 |
| Youngs Modulus: | 13 |
| Rigidity Modulus: | 4.9 |
| Bulk Modulus: | 9.6 |
| Mineral Hardness: | 1.25 |
| Electrical Resistivity: | 35 |
| Melting Point: | 727 |
| Boiling Point: | 1870 |
| Thermal Conductivity: | 18 |
| Coefficient Of Linear Expansion: | 20.6 |
| Enthalpy Of Fusion: | 8.0 |
| Enthalpy Of Vaporization: | 140 |
| Enthalpy Of Atmization: | 182 |
| Most Common Oxidation Numbers: | 2 |
| Color: | Silvery white |
| Classification: | Metallic |
| Discovered By: | Sir Humphrey Davy |
| Discovered At: | England |
| Discovered When: | 1808 |
| Origin Of Name: | From the Greek word barys meaning heavy |
Calculate the molecular weight of Barium or molecular weight Ba.
Also see the full list of chemical elements and atomic weights.