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60
Nd
144.24
Neodymium |
Appearance & Characteristics | Reactions |
Other Forms Radius | Conductivity | Abundance
General:
| Name: Neodymium | Symbol: Nd |
| Group: Rare Earth, Lanthanides | Atomic weight: 144.24 |
| Density @ 293 K: 7.0 g/cm3 | Atomic volume: 20.6 cm3/mol |
| Group: Rare Earth, Lanthanides | Discovered: 1885 |
States
| State (s, l, g): solid | |
| Melting point: 1283.2 K | Boiling point: 3300 K |
| Heat of fusion: 7.140 kJ/mol | Heat of vaporization: 273.0 kJ/mol |
Energies
| 1st ionization energy: 529.6 kJ/mole | |
| Electronegativity: 1.14 | 2nd ionization energy: 1035 kJ/mole |
| Electron affinity: 50 kJ/mole | 3rd ionization energy: 2130 kJ/mole |
| Specific heat: 0.19 J/gK | Heat atomization: 328 kJ/mole atoms |
Oxidation & Electrons
| Shells: 2,8,18,22,8,2 | Electron configuration: [Xe] 4f4 6s2 |
| Minimum oxidation number: 0 | Maximum oxidation number: 3 |
| Min. common oxidation no.: 0 | Max. common oxidation no.: 3 |
Appearance & Characteristics
| Structure: cp: close packed (ABCB) | Color: silvery-white |
| Uses: alloys, Welder's mask | Toxicity: |
| Hardness: mohs | Characteristics: |
Reactions
| Reaction with air: vigorous, w/ht => Nd2O3 | |
| Reaction with 6 M HCl: mild, => H2, NdCl3 | Reaction with 6 M HCl: mild, => H2, NdCl3 |
| Reaction with 15 M HNO3: mild, => Nd(NO3)3 | Reaction with 6 M NaOH: |
Other Forms
| Number of isotopes: 7 | Hydride(s): NdH2 NdH3 |
| Oxide(s): Nd2O3 | Chloride(s): NdCl2 NdCl3 |
Radius
| Ionic radius (2- ion): pm | Ionic radius (1- ion): pm |
| Atomic radius: 181 pm | Ionic radius (1+ ion): pm |
| Ionic radius (2+ ion): pm | Ionic radius (3+ ion): 112.3 pm |
Conductivity
| Thermal conductivity: 16.5 J/m-sec-deg | |
| Electrical conductivity: 15.4 1/mohm-cm | Polarizability: 31.4 A^3 |
Abundance
| Source: Monazite(phosphate),bastnaesite | |
| Rel. abund. solar system: -0.082 log | Abundance earth's crust: 1.4 log |
| cost, pure: 110 $/100g | cost, bulk: $/100g |
