Mercury , including Technical Data, Safety Data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure,ionization energy, abundance on Earth, conductivity and thermal properties are included. 

Mercury is a Block D, Group 12, Period 6 element. The number of electrons in each of Mercury‘s shells is 2, 8, 18, 32, 18, 2 and its electronic configuration is [Xe] 4f145d10 6s2. In its elemental form mercury‘s CAS number is 7439-97-6. The mercury atom has a radius of 216.pm and it‘s Van der Waals radius is 155.pm. Mercury is found both as a native metal and in cinnabar, corderoite, livingstonite ores. Mercury is very toxic. Mercury has been known since ancient times. See Mercuryresearch below. 

Mercury has been known since ancient times. Mercury was named after the planet "Mercury". 

Mercury Abundance. The following table shows the abundance of mercury and each of its naturally occurring isotopes on Earth along with the atomic mass for each isotope. Isotope Atomic Mass % Abundance on Earth Hg-196 195.965815 0.15 Hg-198 197.966752 9.97 Hg-199 198.968262 16.87 Hg-200 199.968309 23.10 Hg-201 200.970285 13.18 Hg-202 201.970626 29.86 Hg-204 203.973476 6.87 The following table shows the abundance of Mercury present in the human body and in the universe scaled to parts per billion (ppb) by weight and by atom:   Typical Human Body Universe by Weight no data 1 ppb by Atom no data 0.006 ppb Mercury Safety Data. The safety data for mercury metal, nanoparticles and its compounds can vary widely depending on the form. For potential hazard information, toxicity, and road, sea and air transportation limitations, such as DOT Hazard Class, DOT Number, EU Number, NFPA Health rating and RTECS Class, please see the specific material or compound referenced in the left margin. Mercurycompounds have no biological role.  Ionization Energy. The ionization energy for mercury (the least required energy to release a single electron from the atom in it‘s ground state in the gas phase) is stated in the following table: 1st Ionization Energy 1007.07 kJ mol-1 2nd Ionization Energy 1809.69 kJ mol-1 3rd Ionization Energy 3299.82 kJ mol-1 Conductivity. As to mercury‘s electrical and thermal conductivity, the electrical conductivity measured in terms of electrical resistivity @ 20 ?C is 95.8  ?Ocm and its electronegativities (or its ability to draw electrons relative to other elements) is 1.9. The thermal conductivity of mercury is 8.34 W m-1 K-1.  Thermal Properties of Mercury. The melting point and boiling point for mercury are stated below. The following chart sets forth the heat of fusion, heat of vaporization and heat of atomization. Heat of Fusion 2.331 kJ mol-1 Heat of Vaporization 59.11 kJ mol-1 Heat of Atomization 64.463 kJ mol-1

Formula Atomic Number Molecular Weight Electronegativity (Pauling) Density Melting Point Boiling Point Vanderwaals radius Ionic radius Energy of first ionization Hg 80 200.59(2) g.mol-1 2.00 (liquid) 13.534 g·cm-3 -38.83°C 356.73°C 155 pm - 1007.1 kJ.mol-1