Scandium

Scandium, ₂₁Sc
Scandium
Pípè	/ˈskændiəm/ (SKAN-dee-əm)
Ìhànsójú	silvery white
Ìwúwo átọ̀mù Ar, std(Sc)	44.955908(5)
Scandium ní orí tábìlì àyè
	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)
Atomic properties
Oxidation states	0, +1, +2, +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 rangeSpectral 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
	Àdàkọ:Category-inline; wo; ọ̀rọ̀; àtúnṣe; \| references

Àyọkà yìí tàbí apá rẹ̀ únfẹ́ àtúnṣe sí.

Ẹ le fẹ̀ jù báyìí lọ tàbí kí ẹ ṣàtúnṣe rẹ̀ lọ́nà tí yíò mu kúnrẹ́rẹ́. Ẹ ran Wikipedia lọ́wọ́ láti fẹ̀ẹ́ jù báyìí lọ.

Itokasi

↑ 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.
↑ 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.
↑ ^3.0 ^3.1 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. Àṣìṣe ìtọ́kasí: Invalid <ref> tag; name "Smith" defined multiple times with different content
↑ ^4.0 ^4.1 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. Àṣìṣe ìtọ́kasí: Invalid <ref> tag; name "McGuire" defined multiple times with different content