Mercury (Hg) — Element 80

80 Hg 200.59

Mercury

Element 80 · 200.59 u · d-block

transition metal

The only metal that is liquid at room temperature. Toxic, but historically used in thermometers and dental fillings.

Phase (STP)

Liquid

Melting Point

-38.83 °C

Boiling Point

356.73 °C

Density

13.5336 g/cm³

Electronegativity

2.0

Atomic Radius

150 pm

Ionization Energy

1007 kJ/mol

Electron Affinity

0 kJ/mol

Discovered

Ancient · Known since antiquity

Electron Configuration

[Xe] 4f14 5d10 6s2