ChemGlobe

Zirconium

Metalsolid
Symbol: Zr
Atomic number: 40
Atomic mass: 91.224
Group: Transition Metal
CAS-number: 7440-67-7

Deutsch
Français
Español
Physical data
Isotopes
Other info
Navigation
Ti
Titanium
Y Yttrium To Periodic Table NiobiumNb
Hafnium
Hf

Go to element

Physical data

Electronic dataThermal dataSteric data
Shells: 2, 8, 18, 10, 2
Orbitals: [Kr] 4d2 5s2
Electronegativity: 1.4, 1.2
1. Ionization potential: 6.6339 eV
2. Ionization potential: 13.13 eV
3. Ionization potential: 22.99 eV
Oxidation states: 4
Electrical conductivity: 0.0236 10^6
Melting point: 1852 °C ±2
Boiling point: 4377 °C
Specific heat: 0.27 J/gK
Heat of fusion: 16.90 kJ/mol
Heat of vaporization: 58.20 kJ/mol
Thermal conductivity: 0.227 W/cmK
Atomic radius: 2.16 Å
Ionic radius: 0.84 Å (+4)
Covalent radius: 1.45 Å
Atomic volume: 14.1 cm³/mol
Density (293 K): 6.4 g/cm³
Crystal structure: hexagonal
hexagonal

Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
86Zr 0 86 0 16.5h β- View
88Zr 0 88 0 83.4d β- View
89Zr 0 89 9/2 3.27d EC, β+ View
90Zr 51.46 89.9043 0 -- --
91Zr 11.23 90.9053 5/2 -- --
92Zr 17.11 91.9046 0 -- --
93Zr 0 92.9057 5/2 1.53E06y β- View
94Zr 17.38 93.9063 0 -- --
95Zr 0 94.9077 5/2 64.02d β-, β- View
96Zr 2.8 95.9083 0 -- --
97Zr 0 97 1/2 16.9h β-, β- View

Other info

Name origin:named after the mineral zircon
Description:Gray-white, lustrous, corrosion-resistant metal.
Discovered by:Martin Klaproth
Year:1789
Place:Germany
Sources:Found in many minerals such as zircon and baddeleyite.
Use(s):Used in alloys such as zircaloy which is used in nuclear applications since it does not readily absorb neutrons. Also baddeleyite is used in lab crucibles. Used in high-performance pumps and valves. Clear zircon (ZrSiO4) is a popular gemstone.