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kasia - 6/26/2016 2:02:15 PM

  stacie - 1/17/2000 1:04:22 AM
  does anybody know if sm 3+ is radioactive?

The oxidation state has nothing to do with radioactivity. Radioactivity is connected with a stability of a nucleus of an element. So it has to do with a number of nucleons not an electron excess or deficiency..

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stacie - 1/17/2000 1:04:22 AM

does anybody know if sm 3+ is radioactive?

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