It wasn't known for anything to the ancients, since it wasn't known to the ancients. Germanium was discovered in 1886.
Natural germanium has only one radioactive isotope - germanium 76. 27 artificial radioisotopes of germanium are known.
Two germanium chlorides are known: GeCl2 and GeCl4.
cuneiform
it was known to ancients
Germanium oxide can exist in different oxidation states: GeO, GeO2, and GeO3. GeO2, also known as germanium dioxide, is the most stable and commonly found oxide of germanium.
There are two types. The formulas are GeCl2 and GeCl4 :)
The triangle was known to ancients, and its origin is lost in history.
Germanium belongs to group 14 (IVA) of the periodic table which is also known as the carbon group. This group includes elements such as carbon, silicon, tin, and lead. Germanium shares similar chemical properties with these elements.
The formula of the hydride formed by germanium is GeH4, known as germane. It contains one germanium atom bonded to four hydrogen atoms.
Gold has been known to the ancients. It's unknown who and when they found it.
Germanium is in group 14 which in increasing atomic number are carbon, silicon, germanium, tin and lead
No person actually discovered it as it is visible to the naked eye and was known by the ancients.