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Template:Infobox scandium

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Scandium, 21Sc
Template:Infobox element/symbol-to-top-image/alt
Scandium
Pronunciation/ˈskændiəm/ (SKAN-dee-əm)
Appearancesilvery white
Standard atomic weight Ar, std(Sc)44.955908(5)[1]
Scandium in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
-

Sc

Y
calciumscandiumtitanium
Atomic nummer (Z)21
Groupgroup 3
Periodperiod 4
Blockd-block
Element category  Transeetion metal
Electron confeeguration[Ar] 3d1 4s2
Electrons per shell2, 8, 9, 2
Pheesical properties
Phase at STPsolit
Meltin pynt1814 K ​(1541 °C, ​2806 °F)
Bylin pynt3109 K ​(2836 °C, ​5136 °F)
Density (near r.t.)2.985 g/cm3
when liquid (at m.p.)2.80 g/cm3
Heat o fusion14.1 kJ/mol
Heat o vapourisation332.7 kJ/mol
Molar heat capacity25.52 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1645 1804 (2006) (2266) (2613) (3101)
Atomic properties
Oxidation states0,[2] +1,[3] +2,[4] +3 (an amphoteric oxide)
ElectronegativityPauling scale: 1.36
Ionisation energies
Atomic radiusempirical: 162 pm
Covalent radius170±7 pm
Van der Waals radius211 pm
Colour lines in a spectral range
Colour lines in a spectral range
Spectral lines o scandium
Ither properties
Naitural occurrenceprimordial
Creestal structurhexagonal close-packed (hcp)
Hexagonal close packed creestal structur for scandium
Thermal expansion(r.t.) (α, poly)
10.2 µm/(m·K)
Thermal conductivity15.8 W/(m·K)
Electrical resistivity(r.t.) (α, poly)
calc. 562 n Ω·m
Magnetic orderinparamagnetic
Young's modulus74.4 GPa
Shear modulus29.1 GPa
Bulk modulus56.6 GPa
Poisson ratio0.279
Brinell haurdness750 MPa
CAS Nummer7440-20-2
History
PredictionDmitri Mendeleev (1871)
DiskiveryLars Fredrik Nilson (1879)
First isolationLars Fredrik Nilson (1879)
Main isotopes o scandium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct 44m2Sc syn 58.61 h IT 44Sc
γ 44Sc
ε 44Ca
45Sc 100% stable
46Sc syn 83.79 d β 46Ti
γ -
47Sc syn 3.3492 d β 47Ti
γ -
48Sc syn 43.67 h β 48Ti
γ -
| references
style="text-align:left"|
in calc from C diff report ref
C 1541
K 1814 1814 0
F 2806 2806 0
WD 1540.85 Celsius Edit this at Wikidata
input C: 1541, K: 1814, F: 2806
comment
style="text-align:left"|
in calc from C diff report ref
C 2836
K 3109 3109 0
F 5136 5137 -1 delta
WD 2836.85 Celsius Edit this at Wikidata
input C: 2836, K: 3109, F: 5136
comment

References

  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. F. Geoffrey N. Cloke; Karl Khan & Robin N. Perutz (1991). "η-Arene complexes of scandium(0) and scandium(II)". J. Chem. Soc., Chem. Commun. (19): 1372–1373. doi:10.1039/C39910001372.
  3. a b Smith, R. E. (1973). "Diatomic Hydride and Deuteride Spectra of the Second Row Transition Metals". Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences. 332 (1588): 113–127. Bibcode:1973RSPSA.332..113S. doi:10.1098/rspa.1973.0015.
  4. a b McGuire, Joseph C.; Kempter, Charles P. (1960). "Preparation and Properties of Scandium Dihydride". Journal of Chemical Physics. 33 (5): 1584–1585. Bibcode:1960JChPh..33.1584M. doi:10.1063/1.1731452.