3 Li 6.94
Lithium
alkali metal
Properties
- Atomic number
- 3
- Atomic mass
- 6.94 u
- Category
- alkali metal
- Group
- 1
- Period
- 2
- Block
- s-block
- State (room temp)
- Solid
- Outer-shell electrons
- 1
- Electronegativity
- 0.98 (Pauling)
- Density
- 0.534 g/cm³
- Melting point
- 180.5 °C
- Boiling point
- 1329.85 °C
Electron configuration
1s² 2s¹
Noble-gas shorthand: [He] 2s¹
Electrons per shell: 2, 1 — that's 1 in the outermost shell.
About Lithium
Lithium (from Greek:λίθος lithos, "stone") is a chemical element with the symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.
- Discovered by Johan August Arfwedson
- Appearance: silvery-white
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.