obtained from the smelting of zinc ores
Pure germanium is obtained by distllation of germanium tetrachloride, followed by hydrolysis of GeCl4 to GeO2 and reducing of GeO2 with hydrogen to Ge.
Germanium compounds are toxic.
Germanium does no "do" anything.
Germanium is not manufactured; its ore is mined then refined into germanium.
Germanium is a semiconductor
germanium reacts naturally
Germanium is Ge.
No, germanium is very brittle.
Germanium is a metalloid.
Yes, germanium is an element.
Germanium is a semiconductor.
Natural germanium has only one radioactive isotope - germanium 76. 27 artificial radioisotopes of germanium are known.