Discovered By: Augustus Matthiessen, Robert Wilhelm Bunsen, Johan August Arfwedson
Discovery year: 1817.
Symbol | Li |
Atomic Number | 3 |
Atomic weight | 6.94 |
Phase | Solid |
Electrons per shell | K2 L1 |
Boiling point | 1342°C |
Melting point | 180.54°C |
Color | Silver |
Electrons | 3 |
Protons | 3 |
Neutrons | 4 |
Oxidation states | -1, +1 |
Electron configuration | 1s^2 2s^1 |
Covalent radius | 128 picometer |
Van der Waals radius | 182 picometer |
Block | s |
Period | 2 |
Magnetic type | Paramagnetic |
Radioactive | No |
Crystal structure | Body-centered cubic |
Electric type | Conductor |
Speed of sound (at 20°C) | 6000 meter/sec |
Electrons per shell | K2 L1 |
Ionic charge | Li^+ |
Density(at room temp.) | 0.534 g/cm^3 |
Density(at melting point) | 0.512 g/cm^3 |
Heat of fusion | 3.00 kJ/mol |
Heat of vaporization | 136 kJ/mol |
Bulk modulus | 11 GPa |
Shear modulus | 4.2 GPa |
Young's modulus | 4.9 GPa |
Mohs hardness | 0.6 |
Electronegativity | 0.98 |
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