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.
Quick Facts Yttrium, Panagway ...
| Yttrium |
|---|
39Y |
|
|
| Panagway |
silvery white
 |
| Kinatibuk-ang mga kinaiya |
| Ngalan, simbolo, kaiphan |
yttrium, Y, 39 |
| Paglitok |
[[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
 Electron shells of yttrium (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 |
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