Mickyrocks123 Mickyrocks123
  • 03-11-2016
  • Chemistry
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Elements beyond number ___on the periodic table are radioactive

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ramenmcdonald
ramenmcdonald ramenmcdonald
  • 03-11-2016
uranium, which is number 92
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Аноним Аноним
  • 03-11-2016
Technetium, which is number 43
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