Zirconium
#chemic/Element [GroupName:: Group-04-Titanium]
[Name-en::Zirconium] [Name-de::Zirkonium] [Weight-u::91.224] [AtomRadius::2.16] [Atom-Vol-ccm-mol::14.1] [Unknown2::1.45] [Radius-nm::6.84] [Electronegative::1.3] [Density::6.49] [MeltingPoint-C::1852] [BoilingPoint-C::4377] [HeatCapacity::0.27] [HeatConduct::0.227] [Enthalpy::16.9] [FormEnergy-kj-mol::58.2] (PeriodNo::5) (GroupNo::4) SpocWebEntityId: 21938
Zirconium is a chemical element with the symbol (Abbr::Zr) and atomic number (Charge-e::40). The name zirconium is taken from the name of the mineral zircon, the most important source of zirconium. The word is related to Persian zargun (zircon; zar-gun, “gold-like” or “as gold”). It is a lustrous, grey-white, strong transition metal that closely resembles hafnium and, to a lesser extent, titanium. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Zirconium forms a variety of inorganic and organometallic compounds such as zirconium dioxide and zirconocene dichloride, respectively. Five isotopes occur naturally, four of which are stable. Zirconium compounds have no known biological role.