3
Li
Lithium
Alkali metal period 2 group 1 s-block discovered: 1817
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 3
- Atomic mass
- 7.0 a.m.u.
- Electron configuration
- [He]2s1
- Electronegativity
- 0.98 on the Pauling scale
- Atomic radius
- 182 pm
- Ionization energy
- 5.392 eV
- Electron affinity
- 0.618 eV
- Oxidation states
- +1
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 453.65 K (180,5 °C)
- Boiling point
- 1615 K (1 341,85 °C)
- Density
- 0.534 g/cm³