| Atomic Number: | 3 |
| Element Symbol: | Li |
| Element Name: | Lithium |
| Atomic Weight: | 6.941 |
| Group Number: | 1 |
| Group Name: | Alkali metal |
| Period Number: | 2 |
| Block: | s-block |
| Ground State Configuration: | 1s2 2s |
| Ground State Level: | 2S1/2 |
| Standard State: | Solid |
| Common Valences: | 0,1 |
| Bond Length: | 303.9 |
| Atomic Radius Empirical: | 145 |
| Atomic Radius Calculated: | 167 |
| Covalent Radius Empirical: | 134 |
| Vander Waals Radius: | 182 |
| Electron Affinity: | 59.6 |
| First Ionization Energy: | 520.2 |
| Pauling Electronegativity: | 0.98 |
| Sanderson Electronegativity: | 0.89 |
| Allred Rochow Electronegativity: | 0.97 |
| Mulliken Jaffe Electronegativity: | 0.97 |
| Allen Electronegativity: | 0.912 |
| Density Of Solid: | 535 |
| Molar Volume: | 13.02 |
| Velocity Of Sound: | 6000 |
| Youngs Modulus: | 4.9 |
| Rigidity Modulus: | 4.2 |
| Bulk Modulus: | 11 |
| Mineral Hardness: | 0.6 |
| Electrical Resistivity: | 9.4 |
| Melting Point: | 180.54 |
| Boiling Point: | 1342 |
| Critical Temperature: | 2950 |
| Thermal Conductivity: | 85 |
| Coefficient Of Linear Expansion: | 46 |
| Enthalpy Of Fusion: | 3.0 |
| Enthalpy Of Vaporization: | 147 |
| Enthalpy Of Atmization: | 159 |
| Most Common Oxidation Numbers: | 1 |
| Color: | Silvery white/grey |
| Classification: | Metallic |
| Discovered By: | Johan August Arfvedson |
| Discovered At: | Stockholm, Sweden |
| Discovered When: | 1817 |
| Origin Of Name: | From the Greek word lithos meaning stone, apparently because it was discovered from a mineral source whereas the other two common Group 1 elements, sodium and potassium, were discovered from plant sources. |
Calculate the molecular weight of Lithium or molecular weight Li.
Also see the full list of chemical elements and atomic weights.