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Why is technetium radioactive/unstable? [duplicate]
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Why is technetium unstable?
So, I understand why technetium (Te) is man-made: it doesn't exist in nature. The thing that confuses me (and my Chem teacher [I'm in high ...
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Why are synthetic elements unstable?
So far 20 synthetic elements have been synthesized. All are unstable, decaying with half-lives between years and milliseconds.
Why is that?
