43
98 u
Tc
Technetium
Transition Metal
Atomic Structure
Physical State
Group
7
Period
5
Block
d
Electron Configuration
[Kr] 4d⁵ 5s²
Physical Properties
Atomic Mass:
98 u
Electronegativity:
1.9
Atomic Radius:
209 pm
Ionization Energy:
7.28 eV
Density:
11.5 g/cm³
Melting Point:
2430 K
Boiling Point:
4538 K
Historical Information
Discovered By:
Carlo Perrier
Year Discovered:
1937