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71
Lu
174.96
Lutetium |
Appearance & Characteristics | Reactions |
Other Forms Radius | Conductivity | Abundance
General:
| Name: Lutetium | Symbol: Lu |
| Group: Rare Earth, Lanthanides | Atomic weight: 174.96 |
| Density @ 293 K: 9.85 g/cm3 | Atomic volume: 17.78 cm3/mol |
| Group: Rare Earth, Lanthanides | Discovered: 1907 |
States
| State (s, l, g): solid | |
| Melting point: 1929.2 K | Boiling point: 3600 K |
| Heat of fusion: 18.60 kJ/mol | Heat of vaporization: 355.90 kJ/mol |
Energies
| 1st ionization energy: 523.6 kJ/mole | |
| Electronegativity: 1.27 | 2nd ionization energy: 1340 kJ/mole |
| Electron affinity: 50 kJ/mole | 3rd ionization energy: 2022 kJ/mole |
| Specific heat: 0.15 J/gK | Heat atomization: kJ/mole atoms |
Oxidation & Electrons
| Shells: 2,8,18,32,9,2 | Electron configuration: [Xe] 4f14 5d1 6s2 |
| Minimum oxidation number: 0 | Maximum oxidation number: 3 |
| Min. common oxidation no.: 0 | Max. common oxidation no.: 3 |
Appearance & Characteristics
| Structure: hcp: hexagonal close pkd | Color: silvery-white |
| Uses: alloys | Toxicity: |
| Hardness: mohs | Characteristics: |
Reactions
| Reaction with air: vigorous, => Lu2O3 | |
| Reaction with 6 M HCl: mild, => H2, LuCl3 | Reaction with 6 M HCl: mild, => H2, LuCl3 |
| Reaction with 15 M HNO3: mild, => Lu(NO3)3 | Reaction with 6 M NaOH: |
Other Forms
| Number of isotopes: 2 | Hydride(s): LuH2 LuH3 |
| Oxide(s): Lu2O3 | Chloride(s): LuCl3 |
Radius
| Ionic radius (2- ion): pm | Ionic radius (1- ion): pm |
| Atomic radius: 174 pm | Ionic radius (1+ ion): pm |
| Ionic radius (2+ ion): pm | Ionic radius (3+ ion): 100.1 pm |
Conductivity
| Thermal conductivity: 16.4 J/m-sec-deg | |
| Electrical conductivity: 16.7 1/mohm-cm | Polarizability: 21.9 A^3 |
Abundance
| Source: Monazite(phosphate),bastnaesite | |
| Rel. abund. solar system: -1.435 log | Abundance earth's crust: -0.3 log |
| cost, pure: 6900 $/100g | cost, bulk: $/100g |
