Business / Construction / Radon: A naturally-occurring, heavier than air, radioactive gas common in many parts of the country. Radon gas exposure is associated with lung cancer. Mitigation measures may involve crawl space and basement venting and various forms of vapor barriers.

Radon (Rn)

Science / Periodic Table of Elements / Radon (Rn): Atomic number: 86, Atomic mass: (222) g.mol -1, Electronegativity: unknown, Density: 9.96*10-3g.cm3 at 20°C, Melting point: - 71 °C, Boiling point: - 62 °C, Vanderwaals radius: unknown, Ionic radiu MORE

Radon System

Business / Construction / Radon System: A ventilation system beneath the floor of a basement and/or structural wood floor and designed to fan exhaust radon gas to the outside of the home MORE

Radium (Ra)

Science / Periodic Table of Elements / Radium (Ra): Atomic number: 88, Atomic mass: 226.0254 g.mol -1, Electronegativity: 0.9, Density: 5 g.cm-3 at 20°C, Melting point: 700 °C, Boiling point: 1140 °C, Vanderwaals radius: 0.230 nm, Ionic radius: unkn MORE

Working Level (WL)

Business / Real Estate / Working Level (WL): A unit of measurement for documenting exposure to radon decay products. One working level is equal to approximately 200 picoCuries per liter. MORE

Fluorine (F)

Science / Periodic Table of Elements / Fluorine (F): Atomic number: 9, Atomic mass: 18.998403 g.mol -1, Electronegativity: 4, Density: 1.8*10-3 g.cm-3 at 20°C, Melting point: -219.6 °C, Boiling point: -188 °C, Vanderwaals radius: 0.135 nm, Ionic radi MORE

Ununoctium (Uuo)

Science / Periodic Table of Elements / Ununoctium (Uuo): Atomic number: 118, Atomic mass: unknown, Electronegativity: unknown, Density: unknown, Melting point: unknown, Boiling point: unknown, Vanderwaals radius: unknown, Ionic radius: unknown, Isotopes: un MORE