Beryllum

Beryllium Beryllium is a rare, light-gray metallic element. You would never see Beryllium in nature as a pure metal. But it is found in bertrandite, beryl, chrysoberyl, phenacite, and other minerals. Beryl and bertrandite are the most important sources of beryllium. It was discovered in 1798. The German chemist Friedrich Wohler and the French chemist A. A. Bussy, not working together, isolated the first samples of pure beryllium in 1828. Beryllium's atomic number is 4. Beryllium's chemical symbol …

…a good electrical conductor. It is used as a heat-conducting electrical insulator in electronic devices and lasers. If beryllium dust is inhaled, it can cause a disease that is sometimes fatal. Some scientists believe beryllium may also produce lung cancer. The United States government has set safety standards to protect workers from excessive exposure to the metal and its compounds. Beryllium’s compounds are Hydrides, Fluoride, Chloride, Bromide, Iodide, Oxide, Sulfide, Selenide, Telluride, and Nitride.