A radioactive metallic element in group VIIB of the periodic table; a translation element. Technetium does not occur naturally on Earth but was discovered in 1937 by Emilio Segré and Carlo Perrier in bombarded molybdenum – the first element to be made artificially. It is now recovered from the fission products of nuclear reactors. Technetium is chemically very like rhenium.
Related category INORGANIC CHEMISTRY
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