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Tantalum is a chemical element; it has symbol Ta and atomic number 73. It is named after Tantalus, a figure in Greek mythology. Tantalum is a very hard, ductile, lustrous, blue-gray transition metal that is highly corrosion-resistant. It is part of the refractory metals group, which are widely used as components of strong high-melting-point alloys. It is…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Tantalum | 177Ta | synth | 1.00 | infobox |
| Tantalum | 178Ta | synth | 1.00 | infobox |
| Tantalum | 179Ta | synth | 1.00 | infobox |
| Tantalum | 180mTa | 0.0120% | 1.00 | infobox |
| Tantalum | 180Ta | synth | 1.00 | infobox |
| Tantalum | 181Ta | 99.988% | 1.00 | infobox |
| Tantalum | 182Ta | synth | 1.00 | infobox |
| Tantalum | 183Ta | synth | 1.00 | infobox |
| Tantalum | Appearance | gray blue | 1.00 | infobox |
| Tantalum | at T (K) | 3297 | 1.00 | infobox |
| Tantalum | Atomic number (Z) | 73 | 1.00 | infobox |
| Tantalum | Atomic radius | empirical: 146 pm | 1.00 | infobox |
| Tantalum | Block | d-block | 1.00 | infobox |
| Tantalum | Boiling point | 5731 K (5458 °C, 9856 °F) | 1.00 | infobox |
| Tantalum | Brinell hardness | 440–3430 MPa | 1.00 | infobox |
| Tantalum | Bulk modulus | 200 GPa | 1.00 | infobox |
| Tantalum | CAS Number | 7440-25-7 | 1.00 | infobox |
| Tantalum | Covalent radius | 170±8 pm | 1.00 | infobox |
| Tantalum | Crystal structure | body-centered cubic (bcc) (cI2) | 1.00 | infobox |
| Tantalum | Density (at 20° C) | 16.678 g/cm3 | 1.00 | infobox |
| Tantalum | Discovery | Anders Gustaf Ekeberg (1802) | 1.00 | infobox |
| Tantalum | Electrical resistivity | 131 nΩ⋅m (at 20 °C) | 1.00 | infobox |
| Tantalum | Electron configuration | [Xe] 4f14 5d3 6s2 | 1.00 | infobox |
| Tantalum | Electronegativity | Pauling scale: 1.5 | 1.00 | infobox |
| Tantalum | Electrons per shell | 2, 8, 18, 32, 11, 2 | 1.00 | infobox |
| Tantalum | Group | group 5 | 1.00 | infobox |
| Tantalum | Heat of fusion | 36.57 kJ/mol | 1.00 | infobox |
| Tantalum | Heat of vaporization | 753 kJ/mol | 1.00 | infobox |
| Tantalum | Ionization energies | 1st: 761 kJ/mol | 1.00 | infobox |
| Tantalum | Ionization energies | 2nd: 1500 kJ/mol | 1.00 | infobox |
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