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Scandium Metall Solid
Symbol: Sc
Atomzahl: 21
Atom-Masse: 44.955910
Gruppe: Übergangsmetall
CAS-number: 7440-20-2

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Schalen: 2,8,9,2
Orbitale: [Ar] 3d1 4s2
Elektronegativität: 1.2, 1.3
1. Ionization potential: 6.5614 eV
2. Ionization potential: 12.80 eV
3. Ionization potential: 24.76 eV
Oxidation states: 3
Electrical conductivity: 0.0177 10^6
Melting point: 1541 °C
Boiling point: 2830 °C
Specific heat: 0.6 J/gK
Heat of fusion: 14.10 kJ/mol
Heat of vaporization: 314.20 kJ/mol
Thermal conductivity: 0.158 W/cmK
Atomic radius: 2.09 Å
Ionic radius: 0.75 Å ()
Covalent radius: 1.44 Å
Atomic volume: 15.0 cm³/mol
Density (293 K): 3.0 g/cm³
Crystal structure: Hexagonal
Hexagonal
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Isotope

NuklidHäufigkeit [%]MasseSpinHalbwertszeitZerfallsmodusZerfallsreihe
44Sc04423.927hBeta+,ECView
45Sc10044.95597/2--stabil--
46Sc045.955483.81dBeta-View
46Scm046118.72sITView
47Sc0477/23.349dBeta-View
48Sc048643.67hBeta-View
49Sc0497/257.3mBeta-View
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Diverses

Herkunft des Namen:latein: Scandia, Scandinavia
Beschreibung:Fairly soft, silvery-white metal. Eighth most abundant 'rare earth' found in the earth's crust (5.0 ppm).
Entdeckt von:Lars Nilson
Jahr:1879
Ort:Schweden
Quelle(n):Occurs mainly in the minerals thortveitile (~34% scandium) and wiikite. Also in some tin and tungsten ores. Pure scandium is obtained as a by-product of uranium refining.
Verwendung(en):Scandium metal is used in some aerospace applications. Scandum oxide (Sc2O3) is used in the manufacture of high-intensity electric lamps. Scandium iodide (ScI3) is used in lamps that produce light having a color closely matching natural sunlight.
 
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