43
Tc
98
Technetium
Element 43 · 98 u · d-block
transition metal
The first artificially produced element. All isotopes are radioactive. Tc-99m is widely used in medical imaging.
Phase (STP)
Solid
Melting Point
2157 °C
Boiling Point
4265 °C
Density
11.5 g/cm³
Electronegativity
1.9
Atomic Radius
135 pm
Ionization Energy
702 kJ/mol
Electron Affinity
53 kJ/mol
Discovered
1937 · Carlo Perrier
Electron Configuration
[Kr] 4d5 5s2
Electron Orbitals
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