Symbol	Tc	Atomic radius: pm	135	Fusion: kJ/Mole	33.29
Name	Technetium	Ionic radius: pm	-	Boiling point: °C	4265
Atomic number	43	Electron affinity	0.55	Melting point: °C	2157
Atomic weight	198.00	1st  ion potential	7.28	Specific Heat Cap: J/(g K)	-
Classification	Trans metal	Natural form	Solid	Thermal Cond: W/(cm K)	0.51
Configuration	[Kr]4d55s2	Crystal structure	Hex	Electrical Cond	0.067
Oxidation states	7	Density	11	Abundance: mg/kg-crust	Synthetic
Electronegativity	2.10	Vaporization: kJ/Mole	585.0
Technetium was discovered in 1937 by Carlo Perrier.			Uses - medical imaging agents, radioactive tracer