| Samarium |
|
62Sm
|
|
|
| Ìhànsójú |
silvery white
 |
| Àwọn ìdámọ́ wíwọ́pọ̀ |
| Orúkọ, àmì-ìdámọ́, nọ́mbà |
samarium, Sm, 62 |
| Ẹ̀ka ẹ́límẹ̀nti |
lanthanide |
| Ẹgbẹ́, àsìkò, àdìpò |
n/a, 6, f |
| Ìwúwo átọ́mù |
150.36 |
| Ìtòléra ẹ̀lẹ́ktrónì |
[Xe] 6s2 4f6
2, 8, 18, 24, 8, 2 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
7.52 g·cm−3 |
| Liquid density at m.p. |
7.16 g·cm−3 |
| Melting point |
1345 K, 1072 °C, 1962 °F |
| Boiling point |
2067 K, 1794 °C, 3261 °F |
| Heat of fusion |
8.62 kJ·mol−1 |
| Heat of vaporization |
165 kJ·mol−1 |
| Molar heat capacity |
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 |
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−1 |
| 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 |
| Àwọn ísótòpù dídúró jùlọ |
| Main article: Àwọn ísótòpù samarium |
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· r |
Samarium (pípè /səˈmɛəriəm/, sə-MAIR-ee-əm) je apilese kemika to ni ami-idamo Sm ati nomba atomu 62.
