Template:Infobox mercury

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goldmercurythallium
Cd

Hg

Cn
Appearance
silvery
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Spectral lines of Mercury (UV not seen)
General properties
Name, symbol, number mercury, Hg, 80
Pronunciation /ˈmɜrkjəri/ or /ˈmɜrkəri/ MER-k(y)ə-ree; other names: /ˈkwɪksɪlvər/; /haɪˈdrɑrdʒɨrəm/ hye-DRAR-ji-rəm
Element category transition metal
Group, period, block 126, d
Standard atomic weight 200.59(2)g·mol−1
Electron configuration [Xe] 4f14 5d10 6s2
Electrons per shell 2, 8, 18, 32, 18, 2 (Image)
Physical properties
Phase liquid
Density (near r.t.) (liquid) 13.534 g·cm−3
Melting point 234.32 K, -38.83 °C, -37.89 °F
Boiling point 629.88 K, 356.73 °C, 674.11 °F
Critical point 1750 K, 172.00 MPa
Heat of fusion 2.29 kJ·mol−1
Heat of vaporization 59.11 kJ·mol−1
Specific heat capacity (25 °C) 27.983 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 315 350 393 449 523 629
Atomic properties
Oxidation states 4, 2 (mercuric), 1 (mercurous)
(mildly basic oxide)
Electronegativity 2.00 (Pauling scale)
Ionization energies 1st: 1007.1 kJ·mol−1
2nd: 1810 kJ·mol−1
3rd: 3300 kJ·mol−1
Atomic radius 151 pm
Covalent radius 132±5 pm
Van der Waals radius 155 pm
Miscellanea
Crystal structure rhombohedral
Magnetic ordering diamagnetic
Electrical resistivity (25 °C) 961nΩ·m
Thermal conductivity (300 K) 8.30 W·m−1·K−1
Thermal expansion (25 °C) 60.4 µm·m−1·K−1
Speed of sound (liquid, 20 °C) 1451.4 m/s
CAS registry number 7439-97-6
Most stable isotopes
Main article: Isotopes of mercury
iso NA half-life DM DE (MeV) DP
194Hg syn 444 y ε 0.040 194Au
195Hg syn 9.9 h ε 1.510 195Au
196Hg 0.15% 196Hg is stable with 116 neutrons
197Hg syn 64.14 h ε 0.600 197Au
198Hg 9.97% 198Hg is stable with 118 neutrons
199Hg 16.87% 199Hg is stable with 119 neutrons
200Hg 23.1% 200Hg is stable with 120 neutrons
201Hg 13.18% 201Hg is stable with 121 neutrons
202Hg 29.86% 202Hg is stable with 122 neutrons
203Hg syn 46.612 d β 0.492 203Tl
204Hg 6.87% 204Hg is stable with 124 neutrons