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Chemistry, 27.04.2021 03:10 Pbaer3087

Which of the isotopes are radioactive? Check all that apply. hydrogen-1
hydrogen-3
helium-4
carbon-14
uranium-235
copernicium-277
fermium-252
carbon-12

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Which of the isotopes are radioactive? Check all that apply. hydrogen-1
hydrogen-3
hel...
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