Zr

ZIRCONIUM

Definition :from 'zircon' or gem. it burns at air in 500C.

Discovery :1789 by martin heinrich klaprath in germany.

Uses :flash bulbs,m surgical appliances

Group of Elements :Early transition metals(Solid)

Atomic Weight :91.224

Oxidation State :+4

Melting Point :1852

Boiling Point :4377

Density :6.44 g/cm3

Electronegativity :1.6