40 Zr 91.2242
Zirconium
TRANSITION METAL
Phase: Solid
Discovered: Martin Heinrich Klaproth
Block: D
Summary
Zirconium is a chemical element with symbol Zr and atomic number 40. The name of zirconium is taken from the name of the mineral zircon, the most important source of zirconium. The word zircon comes from the Persian word zargun زرگون, meaning "gold-colored".
Source: WikipediaPhysical Properties
Atomic Mass 91.2242 u
Density 6.52 g/cm³
Melting Point 2128 K
Boiling Point 4650 K