Elements
Lithium ( Li )
- Atomic number: 3
- Appearance: silvery-white solid
- Standard atomic weight: 6.94
- Group: group 1 (H and alkali metals)
- Period: 2
- Electron configuration: 1s2 2s1
- Element category: alkali metal
- Melting point: 453.65 K
- Boiling point: 1603 K
- Sublimation point: Standard Temperature ( 273.15 ) and Pressure ( 1 bar = 105 Pa )
- Phase at STP: solid
- Density at STP:
- Heat of fusion: 3.0 kJ/mol
- Heat of vaporization: 136 kJ/mol
- Molar heat capacity: 24.86 kJ/(mol·K)
- Oxidation states: 1
- Electronegativity: Pauling scale: 0.98
- Covalent radius: 128 pm (1×10−12 m)
- Van der Waals radius: 182 pm (1×10−12 m)
- Crystal structure:
- Speed of sound: 6000 m/s (at 20 °C)
- Thermal expansion: 46 µm/(m·K)
- Thermal conductivity: 84.8 W/(m·K)