PERIODIC ELEMENT
Tc (Technetium)

 



Atomic number : 43
Atomic mass : 99 g.mol-1
Electronegativity according to Pauling : 1.9
Density : 11.5 g.cm-3 at 20 °C
Melting point : 2200 °C
Boiling point : 4877 °C
Vanderwaals radius : 0.128 nm
Isotopes : 9
Electronic shell : [Kr] 4d65s1
Discovered by : Carlo Perrier in 1937
 
Atomic Structure Uses (Tc-99m is used for radioactive tracing in medicine)