Scandium

Scandium, ₂₁Sc

Scandium
Pípè	/ˈskændiəm/ ​(SKAN-dee-əm)
Ìhànsójú	silvery white
Ìwúwo átọ̀mù Ar, std(Sc)	44.955908(5)[1]
Scandium ní orí tábìlì àyè
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Gold Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson - ↑ Sc ↓ Y calcium ← scandium → titanium
Nọ́mbà átọ̀mù (Z)	21
Ẹgbẹ́	group 3
Àyè	àyè 4
Àdìpọ̀	Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì	Transition metal
Ìtò ẹ̀lẹ́ktrọ́nù	[Ar] 3d1 4s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 9, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	1814 K ​(1541 °C, ​2806 °F)
Ígbà ìhó	3109 K ​(2836 °C, ​5136 °F)
Kíki (near r.t.)	2.985 g/cm3
when liquid (at m.p.)	2.80 g/cm3
Heat of fusion	14.1 kJ/mol
Heat of	332.7 kJ/mol
Molar heat capacity	25.52 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1645 1804 (2006) (2266) (2613) (3101)
Atomic properties
Oxidation states	0,[2] +1,[3] +2,[4] +3 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.36
energies	(more)
Atomic radius	empirical: 162 pm
Covalent radius	170±7 pm
Van der Waals radius	211 pm
Color lines in a spectral range Spectral lines of scandium
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal
Thermal expansion	(r.t.) (α, poly) 10.2 µm/(m·K)
Thermal conductivity	15.8 W/(m·K)
Electrical resistivity	(r.t.) (α, poly) calc. 562 n Ω·m
Magnetic ordering	paramagnetic
Young's modulus	74.4 GPa
Shear modulus	29.1 GPa
Bulk modulus	56.6 GPa
Poisson ratio	0.279
Brinell hardness	750 MPa
CAS Number	7440-20-2
Main isotopes of scandium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 44mSc syn 58.61 h IT 0.2709 44Sc γ 1.0, 1.1, 1.1 44Sc ε - 44Ca 45Sc 100% 45Sc is stable with 24 neutrons 46Sc syn 83.79 d β− 0.3569 46Ti γ 0.889, 1.120 - 47Sc syn 3.3492 d β− 0.44, 0.60 47Ti γ 0.159 - 48Sc syn 43.67 h β− 0.661 48Ti γ 0.9, 1.3, 1.0 -
Àdàkọ:Category-inline wo ọ̀rọ̀ àtúnṣe | references

Itokasi

1. Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna 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. 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. 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.