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Element Description

Zirconium is a hard, lustrous, grayish-white metal. The mineral has been known since ancient times, but the existence of elemental zirconium was not known until the late 18th century. It is abundant in S-type stars and is a component of the sun and meteorites. It is very corrosion resistant and is utilized extensively by the chemical industry where corrosive agents are used. Zirconium is routinely found with some level of hafnium, since seperation of the elements is difficult.

Property Name Property Value Property Name Property Value
Atomic Code (40Zr91.224) Covalent Radius 1.45Angstroms
CAS # 7440-67-7 Vickers Hardness 110
Linear Coefficient of Expansion 5.7x10-6K-1
Melting Point 1855°C Electrical Resistivity 41.4µΩ-cm
Boiling Point 3580°C Crystal Structure Hexagonal
Density 6.506g/cm3 Compressibility 11.77x10-6cm2/kg
Specific Heat @ 25°C 0.066cal/g°C Thermionic Work Function 4.1eV
Heat of Fusion 3.74k-cal/g-atom Modulus of Elasticity 11.2x106psi
Heat of Vaporization 120k-cal/g-atom Poisson Ratio 0.34
Atomic Volume 14.1W/D Magnetic Susceptibility 119x10-6emu/g-atom
First Ionization Energy 160K-cal/g-mole Grueneisen Constant 128,900
Electronegativity 1.4Pauling's Hall Coefficient 0.18x1012V-cm/A-Oe

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