Mercury
Transition Metal
Mercury (Hg) is a chemical element with atomic number 80, classified as a transition metal. At room temperature it is a liquid. It has been known since ancient times.
Properties
- Atomic number
- 80
- Atomic mass
- 200.59 u
- Category
- Transition Metal
- Group
- 12
- Period
- 6
- Block
- d-block
- Electron configuration
- [Xe] 4f¹⁴ 5d¹⁰ 6s²
- Phase at STP
- Liquid
- Density
- 13.5336 g/cm³
- Melting point
- 234.32 K (-38.8 °C)
- Boiling point
- 629.88 K (356.7 °C)
- Electronegativity
- 2
- Atomic radius
- 171 pm
- Ionization energy
- 10.438 eV
- Discovery
- Known since ancient times
Common uses
Thermometers, fluorescent lights, dental amalgams, switches
Did you know?
Only metal that's liquid at room temperature and highly toxic.