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Cadmium Metal Solid
Symbol: Cd
Atomic number: 48
Atomic mass: 112.411
Group: Metal
CAS-number: 7440-43-9
 
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Physical data

Electronic data  Thermal data  Steric data
Shells: 2,8,18,18,2
Orbitals: [Kr] 4d10 5s2
Electronegativity: 1.5, 1.9
1. Ionization potential: 8.9937 eV
2. Ionization potential: 16.908 eV
3. Ionization potential: 37.48 eV
Oxidation states: 2
Electrical conductivity: 0.138 10^6
Melting point: 320.9 °C
Boiling point: 765 °C
Specific heat: 0.23 J/gK
Heat of fusion: 6.192 kJ/mol
Heat of vaporization: 99.570 kJ/mol
Thermal conductivity: 0.968 W/cmK
Atomic radius: 1.71 Å
Ionic radius: 0.95 Å ()
Covalent radius: 1.48 Å
Atomic volume: 13.1 cm³/mol
Density (293 K): 8.65 g/cm³
Crystal structure: Hexagonal
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Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
106Cd1.22105.9060--stable--
108Cd0.88107.9040--stable--
109Cd01095/2462dECView
110Cd12.39109.9030--stable--
111Cd12.75110.9041/2--stable--
111Cdm011111/248.5mITView
112Cd24.07111.9030--stable--
113Cd12.26112.9041/29E15yBeta-View
113Cdm011311/214.1yBeta-,ITView
114Cd28.86113.9030--stable--
115Cd01151/22.228dBeta-View
115Cdm011511/244.6dBeta-View
116Cd7.58115.9050--stable--
117Cd01171/22.49hBeta-,b-View
117Cdm011711/23.4hBeta-,b-View
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Other info

Name origin:Greek: kadmeia (ancient name for calamine (zinc oxide)).
Description:Soft, malleable, blue-white metal.
Discovered by:Fredrich Stromeyer
Year:1817
Place:Germany
Sources:Obtained as a by product of zinc refining.
Use(s):Used in nickel-cadmium batteries. Also in electroplating steel and in the manufacture of berings. Its compounds are found in paint pigments and a wide variety of intense colors. Boiling cadmium gives off a weird, yellow-colored vapor that is poisono
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