Entertainment / Photography / Mercury Vapor Lamp: Is an artificial light source produced by passing current through mercury vapor in a tube. MORE
Science / Periodic Table of Elements / Mercury (Hg): Atomic number: 80, Atomic mass: 200.59 g.mol -1, Electronegativity: 1.9, Density: 13.6 g.cm-3 at 20?°C, Melting point: - 38.9 ?°C, Boiling point: 356.6 ?°C, Vanderwaals radius: 0.157 nm, Ionic radi MORE
Science / Weather / Inches Of Mercury (Hg): The name comes from the use of mercurial barometers which equate the height of a column of mercury with air pressure. One inch of mercury is equivalent to 33.86 millibars or 25.40 millimeters. First d MORE
Science / Periodic Table of Elements / Europium (Eu): Atomic number: 63, Atomic mass: 167.26 g.mol -1, Electronegativity: 1.2, Density: 9.2 g.cm-3 at 20?°C, Melting point: 1522 ?°C, Boiling point: 2510 ?°C, Vanderwaals radius: unknown, Ionic radius: u MORE
Science / Periodic Table of Elements / Cesium (Cs): Atomic number: 55, Atomic mass: 132.9054 g.mol -1, Electronegativity: 0.7, Density: 1.9 g.cm-3 at 20?°C, Melting point: 28.4 ?°C, Boiling point: 669 ?°C, Vanderwaals radius: 0.267 nm, Ionic radius: MORE
Science / Periodic Table of Elements / Sulfur (S): Atomic number: 16, Atomic mass: 32.06 g.mol -1, Electronegativity: 2.5, Density: 2.07 g.cm -3 at 20 ?°C, Melting point: 113 ?°C, Boiling point: 445 ?°C, Vanderwaals radius: 0.127 nm, Ionic radius: MORE