germánium
Germánium (germanium) is a chemical element with the symbol Ge and atomic number 32. It is a metalloid in group 14 of the periodic table, displaying properties between metals and nonmetals. Germanium occurs naturally in trace amounts and is obtained mainly as a byproduct of zinc ore processing and, to a lesser extent, coal.
Dmitri Mendeleev predicted an eka-silicon in 1871. Germanium was discovered in 1886 by Clemens Winkler, who
Germanium is a brittle, lustrous gray-white solid. It crystallizes in the diamond cubic form. It has a
Crustal abundance is low, roughly a few milligrams per kilogram. It is commonly recovered from zinc sulfide
Germanium is valued for its semiconductor properties and is used in high-speed electronics, fiber optics, and
Germanium has five stable isotopes: Ge-70, Ge-72, Ge-73, Ge-74, and Ge-76. In addition, Ge-68 is a used