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Name Technetium
Symbol Tc
Atomic number 43
Atomic mass 97 amu
Normal state Solid
Classification Metallic
Crystal structure Hexagonal
Color Silvery-gray
Date of discovery 1937
Name of discoverer Carlo Perrier and Emillo G. Segre
Name origin from the Greek tekhnetos, meaning artificial.
Uses Source of radiation for medical research.
Obtained from Manufactured by bombarding Molybdenum with heavy hydrogen in a cyclotron. Only minute quantities have been found outside the laboratory, as a by-product of the fission of Uranium-238.