is radioactivity decay reversible or irreversible?
The probability of the reverse effect is unbelievably small, such as with glass shreds becoming a window.
Excellent analogy Gonzolo
In a sense, yes. Nucei can be bombarded with alpha rays. The nuclei will then absorb some of the alpha particles and changes its Z number.
Accelerators often to this to produce special material, E.g. a material with a large percentage of an isotope which nomally isn't there.
I think there is no real chemical or nuclear reaction espontaneously reversible.
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