Technetium
| Technetium | |
|---|---|
| Tc | |
| In situ availability: | |
| Necessity: | |
| Atomic number: | 43 |
| Atomic mass: | [98] |
| group: | 7 |
| period: | 5 |
| normal phase: | Solid |
| series: | Transition Metals |
| density: | 11 g/cm3 |
| melting point: | 2430K, 2157°C, 3915°F |
| boiling point: | 4538K, 4265°C, 7709°F |
| Cr ← Mn → Fe | |
| Mo ← Tc → Ru | |
| W ← Re → Os | |
| Atomic radius (pm): | 135 |
| Bohr radius (pm): | 183 |
| Covalent radius (pm): | 156 |
| Van der Waals radius (pm): | |
| ionic radius (pm): | - |
| 1st ion potential (eV): | 7.28 |
| Electron Configuration | |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s2 | |
| Electrons Per Shell | |
| 2, 8, 18, 13, 2 | |
| Electronegativity: | 2.1 |
| Electron Affinity: | 0.55 |
| Oxidation states: | 7 |
| Magnetism: | Paramagnetic |
| Crystal structure: | Hexagonal |
Technetium is a Transition Metal in group 7.
It has a Hexagonal crystalline structure.
It does not have any isotopes considered to be natural. Its longest-lived known isotope has an atomic number of 98.
This element has no stable isotopes.
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