Yttrium

Yttrium, ₃₉Y
Yttrium
Pípè	/ˈɪtriəm/ (IT-ree-əm)
Ìhànsójú	silvery white
Ìwúwo átọ̀mù Ar, std(Y)	88.90584(1)
Yttrium ní orí tábìlì àyè
	strontium ← yttrium → zirconium
Nọ́mbà átọ̀mù (Z)	39
Ẹgbẹ́	group 3
Àyè	àyè 5
Àdìpọ̀	Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì	Transition metal
Ìtò ẹ̀lẹ́ktrọ́nù	[Kr] 4d1 5s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 9, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	1799 K (1526 °C, 2779 °F)
Ígbà ìhó	3609 K (3336 °C, 6037 °F)
Kíki (near r.t.)	4.472 g/cm3
when liquid (at m.p.)	4.24 g/cm3
Heat of fusion	11.42 kJ/mol
Heat of	365 kJ/mol
Molar heat capacity	26.53 J/(mol·K)
Atomic properties
Oxidation states	0, +1, +2, +3 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.22
Atomic radius	empirical: 180 pm
Covalent radius	190±7 pm
	Color lines in a spectral rangeSpectral lines of yttrium
Other properties
Natural occurrence	primordial
Crystal structure	hexagonal
Speed of sound thin rod	3300 m/s (at 20 °C)
Thermal expansion	(r.t.) (α, poly); 10.6 µm/(m·K)
Thermal conductivity	17.2 W/(m·K)
Electrical resistivity	(r.t.) (α, poly) 596 n Ω·m
Magnetic ordering	paramagnetic
Young's modulus	63.5 GPa
Shear modulus	25.6 GPa
Bulk modulus	41.2 GPa
Poisson ratio	0.243
Brinell hardness	589 MPa
CAS Number	7440-65-5
Main isotopes of yttrium
	Àdàkọ:Category-inline; wo; ọ̀rọ̀; àtúnṣe; \| references

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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.
↑ Yttrium and all lanthanides except Ce, Pm, Eu, Tm, Yb have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017.
↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81th edition, CRC press.