43

Radioactive

Tc

Technetium

(98)

Transition Metal
Solid

Discovery

Perrier, Carlo & Segrè, Emilio (1937)

Etymology

Greek

Meaning

Artificial

Electron configuration

Electron configuration

Crystal structure

Crystal structure

Hexagonal close-packed

Physical Properties

Phase

  (at 21 °C and 101.325 kPa)

Solid

Melting point

  (at 101.325 kPa)

2200.0 °C

2473.15 K

Boiling point

  (at 101.325 kPa)

4612.0 °C

4885.15 K

Density

  (at 21 °C and 101.325 kPa)

11.50 g/cm3

Electronegativity

1.90