Itriyo

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Yttrium
39Y
Sc

Y

Lu
strontiumyttriumzirconium
Appearance
silvery white
General properties
Name, simbolo, kaiphan yttrium, Y, 39
Pronunciation Plantilya:IPAc-en Plantilya:Respell
Element category puthaw nga transisyon
Group, period, block 35, d
Standard atomic weight 88.90585
Electron configuration [Kr] 4d1 5s2
2, 8, 18, 9, 2
Electron shells of yttrium (2, 8, 18, 9, 2)
History
Discovery 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
Yttrium has a hexagonal crystal structure
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 -
t  h  u
· 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.

Ang mga gi basihan niini[usba | edit source]

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


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