Chemistry, 26.01.2021 22:20, PollyB2759

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
heli...