Difference between revisions of "Samarium"
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{{Element | | {{Element | | ||
name=Samarium | | name=Samarium | | ||
| Line 11: | Line 12: | ||
series=Lanthanide | | series=Lanthanide | | ||
density=7.52 g/cm3 | | density=7.52 g/cm3 | | ||
| − | melts=1345K,<BR/> | + | melts=1345K,<BR/>1072°C,<BR/>1962°F | |
| − | boils=2067K,<BR/> | + | boils=2067K,<BR/>1794°C,<BR/>3261°F | |
isotopes=144<BR/>150<BR/>152<BR/>154 | | isotopes=144<BR/>150<BR/>152<BR/>154 | | ||
prior=[[Promethium|<FONT color="#7F7FFF">Pm</FONT>]] | | prior=[[Promethium|<FONT color="#7F7FFF">Pm</FONT>]] | | ||
Revision as of 14:36, 10 October 2007
rotrocm
| Samarium | |
|---|---|
| Sm | |
| In situ availability: | |
| Necessity: | |
| Atomic number: | 62 |
| Atomic mass: | 150.36 |
| group: | 19 |
| period: | N/A |
| normal phase: | Solid |
| series: | Lanthanide |
| density: | 7.52 g/cm3 |
| melting point: | 1345K, 1072°C, 1962°F |
| boiling point: | 2067K, 1794°C, 3261°F |
| Sr ← Y → Zr | |
| Pm ← Sm → Eu | |
| Np ← Pu → Am | |
| Atomic radius (pm): | 185 |
| Bohr radius (pm): | 238 |
| Covalent radius (pm): | |
| Van der Waals radius (pm): | |
| ionic radius (pm): | (+3)108 |
| 1st ion potential (eV): | 5.64 |
| Electron Configuration | |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f6 5s2 5p6 6s2 | |
| Electrons Per Shell | |
| 2, 8, 18, 24, 8, 2 | |
| Electronegativity: | 1.17 |
| Electron Affinity: | - |
| Oxidation states: | 3, 2 |
| Magnetism: | Antiferromagnetic |
| Crystal structure: | Rhombohedral |
Samarium is a Lanthanide metal.
It has a Rhombohedral crystalline structure.
This element has 4 stable isotopes: 144, 150, 152, and 154.
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