NO. 080Post-Transition

Hg

Mercury

Mercury is the only metal liquid at room temperature and is highly toxic, formerly used in thermometers.

Crystal Structure

Rhombohedral

Atomic Mass200.59 u

Density13.53 g/cm³

Melting Point234 K

Boiling Point630 K

Atomic Radius151 pm

Electronegativity2

Ionization Energy1007 kJ/mol

Electron Affinity0 kJ/mol

Bonding TypeMetallic

Oxidation States1, 2

Acid/BaseNeutral

ReactivityMedium

Electron Configuration

[Xe] 4f14 5d10 6s2

Discovered ByAncient civilizations

Year-2000

Known Isotopes

Hg-196Hg-198Hg-199Hg-200Hg-201Hg-202Hg-204