Technetium

=All About the Elements= =Kristy Lee= =__Technetium__=

Electrons : 43
=__Pysical and Chemical properties__= ====Silvery grey metallic (solid). Technetium is placed in the seventh group of the periodic table between rhenium and manganese;technetium more closely resembles rhenium, particularly in their chemical inertness and tendency to form covalent bonds.==== =__History__= ====Technetium was discovered by Carlo Perrier, Emilio Serge in 1937 in Italy. The name Technetium comes from the Greek word technikos which means artificial. Technetium is the first element to be produced artificially. Also all its iostopes are radioactive. Up until 1960 technetium was available in only small amounts.Technetium-99 decays almost entirely by beta decay.==== =__Medical uses__=

=__Common forms__=

Dtechnetium decacarbonyl: Tc2(CO)10
=__Isotopes__= ====Technetium has no stable isotopes. It is one of two of the first 82 elements on the periodic table that has no stable isotopes.Technetium has three long lived radioactive isotopes and they are-97Tc,98Tc, and 99Tc. 98Tc decays by emitting a beta particle. 97Tc decays by electron capture. 99Tc is a decay product of molydbenum.====

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