Details : Item 215

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Alkali metals
Alkaline earth metal
Transition metals I
Transition metals II
Transition metals III
Transition metals IV
Post-transition metal
Metalloid
Diatomic non-metal
Noble gas
Other

Famille : Transition metals I/4
Zirconium
Symbol: Zr, phase: solid, silvery white. The word zircon
comes from the Persian zargun, meaning gold-colored.
Its main use is as an opacifier, conferring a white,
opaque appearance to ceramic materials.
Properties
Atomic number40
Atomic weight91.224
Melting point (K)2128
Boiling point (K)4650
Speed of sound (m/s)3800
Discovery1789 (M. H. Klaproth)