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66
Dy
162.50
Dysprosium |
Appearance & Characteristics | Reactions |
Other Forms Radius | Conductivity | Abundance
General:
| Name: Dysprosium | Symbol: Dy |
| Group: Rare Earth, Lanthanides | Atomic weight: 162.50 |
| Density @ 293 K: 8.536 g/cm3 | Atomic volume: 19.0 cm3/mol |
| Group: Rare Earth, Lanthanides | Discovered: 1886 |
States
| State (s, l, g): solid | |
| Melting point: 1682 K (1409 oC) | Boiling point: 2835 K (2562 oC) |
| Heat of fusion: 11.060 kJ/mol | Heat of vaporization: 230.0 kJ/mol |
Energies
| 1st ionization energy: 571.9 kJ/mole | |
| Electronegativity: 1.2 | 2nd ionization energy: 1126 kJ/mole |
| Electron affinity: 50 kJ/mole | 3rd ionization energy: 2200 kJ/mole |
| Specific heat: 0.17 J/gK | Heat atomization: 291 kJ/mole atoms |
Oxidation & Electrons
| Shells: 2,8,18,28,8,2 | Electron configuration: [Xe] 4f10 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, CD disk | Toxicity: |
| Hardness: mohs | Characteristics: neutron absorber |
Reactions
| Reaction with air: vigorous, => Dy2O3 | |
| Reaction with 6 M HCl: mild, => H2, DyCl3 | Reaction with 6 M HCl: mild, => H2, DyCl3 |
| Reaction with 15 M HNO3: mild, => Dy(NO3)3 | Reaction with 6 M NaOH: |
Other Forms
| Number of isotopes: 7 | Hydride(s): DyH2 DyH3 |
| Oxide(s): Dy2O3 | Chloride(s): DyCl2 DyCl3 |
Radius
| Ionic radius (2- ion): pm | Ionic radius (1- ion): pm |
| Atomic radius: 178 pm | Ionic radius (1+ ion): pm |
| Ionic radius (2+ ion): 121 pm | Ionic radius (3+ ion): 105.2 pm |
Conductivity
| Thermal conductivity: 10.7 J/m-sec-deg | |
| Electrical conductivity: 10 1/mohm-cm | Polarizability: 24.5 A^3 |
Abundance
| Source: Monazite(phosphate),bastnaesite | |
| Rel. abund. solar system: -0.404 log | Abundance earth's crust: 0.5 log |
| cost, pure: 210 $/100g | cost, bulk: $/100g |
