The element Technetium is a silvery gray transition metal. It has the atomic number of 43 and has the atomic symbol Tc. It is also the lightest element with all radioactive isotopes and the first artificially produced element.
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Element Technetium (Tc), Group 7, Atomic Number 43, d-block, Mass [98]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Jump to main content
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Technetium is the 43rd element in the periodic table and has a symbol of Tc and atomic number of 43. It has an atomic weight of (97.90721) and a mass number of 83. Technetium has forty-three protons and forty neutrons in its nucleus, and forty-three electrons in five shells.
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Technetium (Tc) is an artificial element that is not found in nature. It is a member of the transition metals group and holds the atomic number 43. Technetium was the first element to be made synthetically in 1937, and is one of the few elements to be made in a laboratory.
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Technetium occupies the place below manganese in the periodic table, and it long tantalised chemists because it could not be found. Those who claimed to have discovered it and gave it names like davyum, lucium, and nipponium, were mistaken.
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Technetium is a transition metal element with atomic number 43 and element symbol Tc. It is the lightest radioactive element. Traces of technetium occur naturally, but it was discovered through synthesis in a lab and was the first artificial element.
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technetium (Tc), chemical element, synthetic radioactive metal of Group 7 (VIIb) of the periodic table, the first element to be artificially produced.
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Technetium: Tc is the lightest element whose isotopes are all radioactive and is a shiny grey metal. Fun fact about Technetium: Technetium was missing in the original periodic table of Mendeleev. No isotope has a half-life greater than 4.21 million years i.e. less than the age of the Earth.
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In 1937, it became the first element to be discovered by synthesis in a laboratory — paving the way to the atomic age. The discovery of technetium.
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