| Atomic Number: | 88 |
| Element Symbol: | Ra |
| Element Name: | Radium |
| Atomic Weight: | 226 |
| Group Number: | 2 |
| Group Name: | Alkaline earth metal |
| Period Number: | 7 |
| Block: | s-block |
| Ground State Configuration: | [Rn] 7s2 |
| Ground State Level: | 1S0 |
| Standard State: | Solid |
| Common Valences: | 0,2 |
| Bond Length: | 445.8 |
| Atomic Radius Empirical: | 215 |
| First Ionization Energy: | 509.3 |
| Pauling Electronegativity: | 0.9 |
| Allred Rochow Electronegativity: | 0.97 |
| Mulliken Jaffe Electronegativity: | 0.92 |
| Density Of Solid: | 5000 |
| Molar Volume: | 41.09 |
| Electrical Resistivity: | 100 |
| Melting Point: | 700 |
| Boiling Point: | 1737 |
| Thermal Conductivity: | 19 |
| Enthalpy Of Fusion: | about 8 |
| Enthalpy Of Vaporization: | about 125 |
| Enthalpy Of Atmization: | 159 |
| Most Common Oxidation Numbers: | 2 |
| Color: | Metallic |
| Classification: | Metallic |
| Discovered By: | Pierre and Marie Curie |
| Discovered At: | France |
| Discovered When: | 1898 |
| Origin Of Name: | From the Latin word radius meaning ray |
Calculate the molecular weight of Radium or molecular weight Ra.
Also see the full list of chemical elements and atomic weights.