Technetium
Atomic number
43
Atomic weight
99
Discovery (year)
1939
Atomic radius (A)
1.35
Melting point (
o
C)
@
Boiling point (
o
C)
@
Density (g/cm
3
)
Specific heat (cal/g
o
C)
@
Ionization potential (eV)
7.28
Electron Affinity (eV)
0.7
