Technetium (Tc)
Atomic number
43
Mass number
99
Electronegativity
1.9
Covalent radius
1.27
Atomic radius
1.95
Melting point
2473.0
Boiling point
4538.0
Density
11.5
Specific heat
0.21
Electrical conductivity
0.067e6
Thermal conductivity
0.506