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Chemical Element: technetium
(Modern Latin: from Greek, technetos, "artificial"; the first man-made artificial element; radioactive metal)Chemical-Element InformationSymbol: Tc
Atomic number: 43
Year discovered: 1937
Discovered by: Emilio Gino Segré (1905-1989), an Italian physicist, and Carlo Perrier of Italy.
- Element 43 (technetium) was predicted on the basis of the Periodic Table by Mendeléyev.
- He suggested that it should be very similar to manganese and gave it the name eka-manganese.
- Technetium was erroneously reported as having been discovered in 1925, at which time it was named masurium.
- The element was actually discovered by C. Perrier and Emilio Gino Segrè in Italy in 1937.
- It was found in a sample of molybdenum bombarded by deuterons.
- Technetium was the first element to be produced artificially and all its isotopes are radioactive.
- It is named after the Greek word technetos, meaning "artificial".
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoAlthough Technetium has the lowest atomic number out of all the man-made elements, I think the first was actually Neptunium
Wiki User
∙ 11y agoThe first manmade element was technetium because scientists failed to find it naturally
Wiki User
∙ 13y agoTechnetium (Tc) was the first man made element. With atomic number 43 it is the lowest chemical element without a stable isotope.
Wiki User
∙ 13y agoIf you are looking at the proper periodic table, there aren't any man made elements.
Wiki User
∙ 15y agotechnetium - Tc
Wiki User
∙ 11y agoTechnetium
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H2O isn't a single element, which is what the periodic table Most things are made of compounds of these elements. . It is comprised of 2 hydrogen atoms (H, on the periodic table) and oxygen (O, on the periodic table).
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Copper is on the Periodic Table, anything on the periodic table is an element so copper wire is made from an element.
What element is a soft drink can made from on the periodic table?
How about you get the question right in the first place
What is a harilium?
Harilium is a made up part to a periodic table some one had made up
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No, starch is not in the periodic table because starch is not a element.
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The periodic table lists element and not minerals.
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Dmitri Mendeleev made the Periodic table.
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It isn't on the periodic table since it is not a single element but a compound made of two elements: hydrogen and chlorine.
What is maganese made out of?
Manganese, element #25 on the periodic table.
What man made element is the lightest on the periodic table?
Helium with an atomic number of 2,is the lightest gas on the periodic table :)
What is the lightest man made element on the periodic table?
Helium with an atomic number of 2,is the lightest gas on the Periodic Table :)
Why is Dimitri mendeleev important to the periodic table?
He made the first periodic table.
Why is carbon monoxide is or not an element?
its not in the periodic table because its man made
