• Question: could you tell me what the biggest atoms name is??

    Asked by wally95 to MarkF on 13 Jun 2010 in Categories: .
    • Photo: Mark Fogg

      Mark Fogg answered on 13 Jun 2010:

      Aargh! a real Chemistry question. It depends on your definition of biggest, mass or size?
      From the periodic table it will be Mass = Ununoctium and Size = Francium…..BUT!….
      … Ununoctium (atomic weight = 294) it’s synthetic, radioactive and decays very quickly. I’m pretty sure the heaviest naturally occurring is Uranium (atomic weight = 238). Francium, bottom left of the periodic table, again is highly radioactive and decays quickly. Therefore the biggest that’s relatively stable will be Caesium. Hope that helps?

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