Terbium
Terbium General
| Name:Terbium | Symbol:Tb |
| Type:Rare Earth, Lanthanides | Atomic weight:158.9254 |
| Density @ 293 K:8.27 g/cm3 | Atomic volume:19.2 cm3/mol |
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Discovered:
1843 |
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Terbium States
| State (s, l, g):solid | |
| Melting point: 1633.2 K | Boiling point:3073 K |
Terbium Energies
| Specific heat capacity:0.18 J/gK | Heat of atomization:389 kJ/mole atoms |
| Heat of fusion:10.80 kJ/mol | Heat of vaporization :330.90 kJ/mol |
| 1st ionization energy: 564.7 kJ/mole | 2nd ionization energy:1112 kJ/mole |
| 3rd ionization energy:2114 kJ/mole | Electron affinity:50 kJ/mole |
Terbium Oxidation & Electrons
| Shells:2,8,18,27,8,2 | Electron configuration:[Xe] 4f9 6s2 |
| Minimum oxidation number:0 | Maximum oxidation number:4 |
| Min. common oxidation no.:0 | Max. common oxidation no.:3 |
| Electronegativity (Pauling Scale):1.21 | Polarizability volume:25.5 Å3 |
Terbium Appearance & Characteristics
| Structure:hcp: hexagonal close pkd | Color:silvery-white |
| Hardness:mohs | |
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Harmful effects:
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Characteristics:
soft Uses: alloys |
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Terbium Reactions
| Reaction with air:vigorous, => Tb4 O7 (approx.) | Reaction with 6 M HCl:mild, => H2, TbCl3 |
| Reaction with 15 M HNO3:mild, => Tb(NO3 )3 | Reaction with 6 M NaOH: |
Terbium Compounds
| Oxide(s):TbO2 Tb4 O7 | Chloride(s): TbCl3 |
| Hydride(s):TbH2 TbH3 |
Terbium Radius
| Atomic radius: 177 pm | Ionic radius (1+ ion):pm |
| Ionic radius (2+ ion):pm | Ionic radius (3+ ion):106.3 pm |
| Ionic radius (2- ion):pm | Ionic radius (1- ion):pm |
Terbium Conductivity
| Thermal conductivity:11.1 J/m-sec-deg | Electrical conductivity:8.8 1/mohm-cm |
Terbium Abundance & Isotopes
| Abundance earth's crust:0 log | |
| Abundance solar system:-1.220 log | |
| Cost, pure:$5040 per 100g | |
| Cost, bulk: $ per 100g | |
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Source:
Monazite(phosphate),bastnaesite |
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Isotopes:
1 |
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Terbium Other
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Other:
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