Li
Lithium
Alkali MetalAtomic Number: 3 • Atomic Mass: 6.9400 u • Period: 2 • Group: 1
Electron Configuration: 1s² 2s¹
Phase: Solid
Electronegativity: 0.98
Physical & Chemical Properties
Physical Properties
- •Soft, silver-white metal
- •Lowest density of all solid elements
- •High thermal conductivity
- •High specific heat capacity
Melting Point
453.69 K (180.54 °C, 356.97 °F)
Boiling Point
1615 K (1341.85 °C, 2447.33 °F)
Density
0.534 g/cm³
Electronegativity
0.98 (Pauling scale)
Chemical Properties
- •Highly reactive and flammable
- •Reacts vigorously with water
- •Forms strong alkaline solutions
- •Strong reducing agent
Electron Configuration
1s² 2s¹Electron configuration describes how electrons are distributed in atomic orbitals, showing how they are arranged in energy levels and subshells.