Technetium

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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
CrMnFe
Mo ← Tc → Ru
WReOs
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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