Samarium
Samarium General
| Name:Samarium | Symbol:Sm |
| Type:Rare Earth, Lanthanides | Atomic weight:150.4 |
| Density @ 293 K:7.54 g/cm3 | Atomic volume:19.95 cm3/mol |
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Discovered:
1880 |
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Samarium States
| State (s, l, g):solid | |
| Melting point:1345.2 K | Boiling point:2073 K |
Samarium Energies
| Specific heat capacity:0.20 J/gK | Heat of atomization:207 kJ/mole atoms |
| Heat of fusion:8.630 kJ/mol | Heat of vaporization :166.40 kJ/mol |
| 1st ionization energy:543.3 kJ/mole | 2nd ionization energy:1068 kJ/mole |
| 3rd ionization energy:2260 kJ/mole | Electron affinity:50 kJ/mole |
Samarium Oxidation & Electrons
| Shells:2,8,18,24,8,2 | Electron configuration: [Xe] 4f6 6s2 |
| Minimum oxidation number:0 | Maximum oxidation number:3 |
| Min. common oxidation no.:0 | Max. common oxidation no.:3 |
| Electronegativity (Pauling Scale):1.17 | Polarizability volume:28.8 Å3 |
Samarium Appearance & Characteristics
| Structure:cp: cls pkd (ABCBCACAB) | Color:silvery-white |
| Hardness:mohs | |
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Harmful effects:
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Characteristics:
Uses: alloys, headphones |
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Samarium Reactions
| Reaction with air:vigorous, => Sm2O3 | Reaction with 6 M HCl:mild, => H2, SmCl3 |
| Reaction with 15 M HNO3:mild, => Sm(NO3)3 | Reaction with 6 M NaOH: |
Samarium Compounds
| Oxide(s):Sm2O3 | Chloride(s):SmCl2 SmCl3 |
| Hydride(s):SmH2 SmH3 |
Samarium Radius
| Atomic radius:180 pm | Ionic radius (1+ ion):pm |
| Ionic radius (2+ ion):pm | Ionic radius (3+ ion):109.8 pm |
| Ionic radius (2- ion):pm | Ionic radius (1- ion):pm |
Samarium Conductivity
| Thermal conductivity:13.3 J/m-sec-deg | Electrical conductivity:11 1/mohm-cm |
Samarium Abundance & Isotopes
| Abundance earth's crust: | |
| Abundance solar system: | |
| Cost, pure:$610 per 100g | |
| Cost, bulk:$ per 100g | |
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Source:
Monazite(phosphate), bastnaesite |
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Isotopes:
7 |
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Samarium Other
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Other:
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