All radioactive material decays into non-radioactive elements, eventually. That’s by definition.
Often there are mid-steps where the radioactive atoms need to decay several times before they reach a stable state with no half-life.
Also as a side note, half-life is a term that can apply to generally anything that can be halved. The medical sector uses half-life a lot to talk about how quickly your body metabolizes certain substances, so if you’re injected with a medicine or a toxin, how long does it take for half of it to go away.
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