Electronic data		Thermal data		Steric data
Shells: 2,8,18,32,18,2 Orbitals: [Xe] 4f14 5d10 6s2 Electronegativity: 1.4, 1.9 1. Ionization potential: 10.4375 eV 2. Ionization potential: 18.759 eV 3. Ionization potential: 34.202 eV Oxidation states: 2,1 Electrical conductivity: 0.0104 10^6		Melting point: -38.87 °C Boiling point: 356.58 °C Specific heat: 0.139 J/gK Heat of fusion: 2.295 kJ/mol Heat of vaporization: 59.229 kJ/mol Thermal conductivity: 0.0834 W/cmK		Atomic radius: 1.76 Å Ionic radius: 1.02 Å () Covalent radius: 1.49 Å Atomic volume: 14.82 cm³/mol Density (293 K): 13.546 g/cm³ Crystal structure: Rhombohedral

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
194Hg	0	194	0	520y	EC	View
196Hg	0.146	195.966	0	--	stable	--
197Hg	0	197	1/2	2.672d	EC	View
197Hgm	0	197	15/2	23.8h	IT,EC	View
198Hg	10.02	197.967	0	--	stable	--
199Hg	16.4	198.968	1/2	--	stable	--
200Hg	23.13	199.968	0	--	stable	--
201Hg	13.22	200.97	3/2	--	stable	--
202Hg	29.8	201.971	0	--	stable	--
203Hg	0	203	5/2	46.61d	-	View
204Hg	6.85	202.974	0	--	stable	--
206Hg	0	206	0	8.2m	-	View

Legend

Name origin:	From the Roman god Mercury; symbol from Latin: hydrargyrus (liquid silver).
Description:	Heavy, silver-white metal, liquid at ordinary temperatures.
Discovered by:	Known to the ancients
Year:	--
Place:	Unknown
Sources:	Virtually all mercury comes from cinnabar or mercury sulfide (HgS). Some sources of red cinnabar are so rich in mercury that droplets of elemental mercury can be found in random samples.
Use(s):	Used in thermometers, barometers, and batteries. Also used in electrical switches and mercury-vapor lighting products.