atomic number 99


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Related to atomic number 99: Element 100
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Noun1.atomic number 99 - a radioactive transuranic element produced by bombarding plutonium with neutronsatomic number 99 - a radioactive transuranic element produced by bombarding plutonium with neutrons
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
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From which scientist does the element with the atomic number 99 take its name?