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Mercury (Hg)

Mercury (Hg) is element 80 of the periodic table, a transition metal in period 6 and group 12. Its standard atomic weight is 200.592, so one mole of mercury atoms has a mass of 200.592 g. At room temperature it is a liquid; it melts at -38.83 °C and boils at 356.73 °C.

80 Hg Mercury 200.592

Period 6, group 12 · Transition metal

← Au Gold Tl Thallium →

Atomic number	80
Symbol	Hg
Standard atomic weight	200.592
Molar mass	200.592 g/mol
Category	Transition metal
Group	12
Period	6
Block	d-block
Electron configuration	[Xe] 6s² 4f¹⁴ 5d¹⁰
Oxidation states	+2, +1
Electronegativity (Pauling)	2
Atomic radius (van der Waals)	209 pm
First ionisation energy	10.438 eV (1007.1 kJ/mol)
Electron affinity	—
State at room temperature	Liquid
Melting point	234.32 K (-38.83 °C)
Boiling point	629.88 K (356.73 °C)
Density	13.5336 g/cm³
Discovered	Known since antiquity

Group 12

Zn · Zinc Cd · Cadmium Cn · Copernicium

Calculate with Mercury

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Atomic weight: IUPAC CIAAW standard atomic weight. Other properties: PubChem (U.S. National Library of Medicine, public domain). Values such as melting point and radius depend on how they were measured; check a data book for precise work.