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Yttrium
39Y
Sc ↑ Y ↓ Lu Periodic table strontium ← yttrium → zirconium
Panagway
silvery white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	yttrium, Y, 39
Paglitok	/ˈɪtriəm/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ree-əm]]
Kategoriyang elemento	puthaw nga transisyon
Group, period, block	3, 5, d
Gibug-aton sa atomo	88.90585
Kontorno sa elektron	[Kr] 4d1 5s2 2, 8, 18, 9, 2
History
Pagkadiskobre	Johan Gadolin (1794)
First isolation	Carl Gustav Mosander (1840)
Physical properties
Phase	magahi
Density (near r.t.)	4.472 g·cm−3
Liquid density at m.p.	4.24 g·cm−3
Melting point	1799 K, 1526 °C, 2779 °F
Boiling point	3609 K, 3336 °C, 6037 °F
Heat of fusion	11.42 kJ·mol−1
Heat of vaporization	365 kJ·mol−1
Molar heat capacity	26.53 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1883 2075 (2320) (2627) (3036) (3607)
Atomic properties
Oxidation states	3, 2, 1 (weakly basic oxide)
Electronegativity	1.22 (Pauling scale)
Ionization energies	1st: 600 kJ·mol−1
	2nd: 1180 kJ·mol−1
	3rd: 1980 kJ·mol−1
Atomic radius	180 pm
Covalent radius	190±7 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	paramagnetic[1]
Electrical resistivity	(r.t.) (α, poly) 596 nΩ·m
Thermal conductivity	17.2 W·m−1·K−1
Thermal expansion	(r.t.) (α, poly) 10.6 µm/(m·K)
Speed of sound (thin rod)	(20 °C) 3300 m·s−1
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 registry number	7440-65-5
Most stable isotopes
Main article: Isotopes of yttrium
iso NA half-life DM DE (MeV) DP 87Y syn 3.35 d ε - 87Sr γ 0.48, 0.38D - 88Y syn 106.6 d ε - 88Sr γ 1.83, 0.89 - 89Y 100% 89Y is stable with 50 neutrons 90Y syn 2.67 d β− 2.28 90Zr γ 2.18 - 91Y syn 58.5 d β− 1.54 91Zr γ 1.20 -
· r

Ang itriyo (Iningles yttrium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Y ug kaiphan nga atomik 39. Ang itriyo mao ang puthaw nga transisyon.

1. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.