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25 June, 21:36

Which of the following isotopes would most likely be unstable and therefore radioactive?

helium-3

calcium-40

molybdenum-98

mercury-194

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  1. 26 June, 00:50
    0
    Helium 3 is stable

    calcium 40 is stable

    molybdenum in unstable and goes through beta radiation

    Mercury 194 is unstable and goes through gamma radiation

    So Mercury 194 is the answer.
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