Technetium (Tc)
Technetium was the first artificially produced element. It is radioactive and used in medical imaging.
Properties of Technetium
- Atomic number
- 43
- Category
- Transition Metal
- Atomic mass
- 98 u
- Electron configuration
- [Kr] 4d⁵ 5s²
- Melting point
- 2430 K (2156.85 °C)
- Boiling point
- 4538 K (4264.85 °C)
- Density
- 11.5 g/cm³
- Electronegativity (Pauling)
- 1.9
- Appearance
- Silvery-gray metal
- Discovered by
- Emilio Segrè (1937)
Facts about Technetium
- Technetium was the first element ever made by humans in a lab!
- Its name comes from the Greek word for "artificial"!
- Technetium is used in hospitals to scan for diseases inside your body!
- There is almost no naturally occurring technetium on Earth!