| − | {{Element | name=Technetium | symbol=Tc | anumber=43 | amass=97 amu | state=Solid | class=Metallic | cstructure=Hexagonal | color=Silvery-gray | date=1937 | discname=Carlo Perrier and Emillo G. Segre | origname=from the Greek ''tekhnetos'', meaning ''artificial''. | uses=Source of radation for medical research. | obtained=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. }} | + | {{Element | name=Technetium | symbol=Tc | anumber=43 | amass=97 amu | state=Solid | class=Metallic | cstructure=Hexagonal | color=Silvery-gray | date=1937 | discname=Carlo Perrier and Emillo G. Segre | origname=from the Greek ''tekhnetos'', meaning ''artificial''. | uses=Source of radiation for medical research. | obtained=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. }} |