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|
Yttrium
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Y | 39 | 88.90585 | 1526 °C | 3336 °C | Solid | 4.472 g/cm3 | Metal |
|
|
|
| General |
| Name, Symbol, Number |
yttrium, Y, 39 |
| Chemical series |
transition metals |
| Group, Period, Block |
3, 5, d |
| Appearance |
silvery white
 |
| Standard atomic weight |
88.90585(2) g·mol−1 |
| Electron configuration |
[Kr] 4d1 5s2 |
| Electrons per shell |
2, 8, 18, 9, 2 |
| Physical properties |
| Phase |
solid |
| 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 |
| Heat capacity |
(25 °C) 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 |
| Crystal structure |
hexagonal |
| Oxidation states |
3
(weakly basic oxide) |
| Electronegativity |
1.22 (scale Pauling) |
Ionization energies
(more) |
1st: 600 kJ·mol−1 |
| 2nd: 1180 kJ·mol−1 |
| 3rd: 1980 kJ·mol−1 |
| Atomic radius |
180 pm |
| Atomic radius (calc.) |
212 pm |
| Covalent radius |
162 pm |
| Miscellaneous |
| Magnetic ordering |
no data |
| Electrical resistivity |
(r.t.) (α, poly) 596 nΩ·m |
| Thermal conductivity |
(300 K) 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 |
| 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 |
| Selected isotopes |
|
|
| References |
|
Yttrium Compounds
|
Source: Wikipedia article Yttrium
|
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Chemistry Quick Facts
