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Zr - Zirconium
 Properties | Compounds

Zirconium is a flamable metal and is not found as a metalic ore in nature. The metal has a unique property of being transparant to neutrons. Zirconium was discovered in 1789 by Martin Klaproth working in Berlin and the pure metal obtained by Berzelius in 1824 in Stockholm.


Atomic number   40   Density, g/mL   6 .49
Atomic weight,u   91 .22 Melting point, K   2125  
Bonding radius, A   1 .45 Boiling point, K   4682  
Atomic radius, A   2 .16 Heat of vaporization, kJ/mol   590 .88
Ionization Potential, V   7 .576 Heat of fusion, kJ/mol   11 .3
Electronegativity   1 .93 Specific heat, J/gK   0 .235
The oxide is amphoteric.
Crystal are face centered cubic.

Electron config. : [Kr] 4d10 5s1


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac* Rf Db Sg Bh Hs Mt 110 111 112   114
Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

 

Selected Compounds:
name/formula
mass, g/mol
mp,K 
bp,K 
density, g/cc
solubility(temp), g/100cc
zirconium oxide
ZrO2
123.22
2680
4300
5.85
-
 
Zirconia, white, monoclinic or tetragonal crystals, white solid used as firebrick and in Nernst lamps.

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