|
|
| Ìfarahàn |
silvery white
 |
| Àwọn ìní àníkárí |
| Orúkọ, àmì-ìdámọ̀, nọ́mbà |
samarium, Sm, 62 |
| Ẹ̀ka apilẹ̀sẹ̀ |
lanthanide |
| Àdìpọ̀, ìgbà, block |
n/a, 6, f |
| Ìwúwo átọ́mù |
150.36 g·mol−1 |
| Ìtòjọ ẹ̀lẹ́ktrónì |
[Xe] 6s2 4f6 |
| Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan |
2, 8, 18, 24, 8, 2 (Image) |
| Àwọn ìní aláfójúrí |
| Phase |
solid |
| Kíki (tó súnmọ́ r.t.) |
7.52 g·cm−3 |
| Liquid density at m.p. |
7.16 g·cm−3 |
| ojúàmì ìyọ́ |
1345 K, 1072 °C, 1962 °F |
| ajúàmì ìhó |
2067 K, 1794 °C, 3261 °F |
| Heat of fusion |
8.62 kJ·mol−1 |
| Heat of vaporization |
165 kJ·mol−1 |
| Specific heat capacity |
(25 °C) 29.54 J·mol−1·K−1 |
| Vapor pressure |
| P/Pa |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T/K |
1001 |
1106 |
1240 |
(1421) |
(1675) |
(2061) |
|
| Atomic properties |
| Oxidation states |
3, 2 (mildly basic oxide) |
| Electronegativity |
1.17 (Pauling scale) |
| Ionization energies |
1st: 544.5 kJ·mol−1 |
| 2nd: 1070 kJ·mol−1 |
| 3rd: 2260 kJ·mol−1 |
| Atomic radius |
180 pm |
| Covalent radius |
198±8 pm |
| Miscellanea |
| Crystal structure |
rhombohedral |
| Magnetic ordering |
paramagnetic[1] |
| Electrical resistivity |
(r.t.) (α, poly) 0.940 µΩ·m |
| Thermal conductivity |
(300 K) 13.3 W·m−1·K−1 |
| Thermal expansion |
(r.t.) (α, poly) 12.7 µm/(m·K) |
| Speed of sound (thin rod) |
(20 °C) 2130 m/s |
| Young's modulus |
(α form) 49.7 GPa |
| Shear modulus |
(α form) 19.5 GPa |
| Bulk modulus |
(α form) 37.8 GPa |
| Poisson ratio |
(α form) 0.274 |
| Vickers hardness |
412 MPa |
| Brinell hardness |
441 MPa |
| CAS registry number |
7440-19-9 |
| Most stable isotopes |
| Main article: Isotopes of samarium |
|
|
|
|
Samarium (pípè /səˈmɛəriəm/, sə-MAIR-ee-əm) je apilese kemika to ni ami-idamo Sm ati nomba atomu 62.
