80 Hg
Transition metal
Mercury
Only metal liquid at room temp.
Properties of Mercury
- Atomic number (Z)
- 80
- Symbol
- Hg
- Atomic mass
- 200.59 g/mol
- Category
- Transition metal
- Group
- 12
- Period
- 6
- Electron configuration
- [Xe] 4f¹⁴ 5d¹⁰ 6s²
- Electronegativity (Pauling)
- 2
- Atomic radius
- 171 pm
- First ionization energy
- 1007 kJ/mol
- Melting point
- 234.32 K (-38.8 °C)
- Boiling point
- 629.88 K (356.7 °C)
- Density
- 13.5336 g/cm³
- Phase at 25 °C
- Liquid
- Discovered
- Known since ancient times