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Quick note - the problem with Youtube videos not embedding on the forum appears to have been fixed, thanks to ZiprHead. If you do still see problems let me know.
I know that some atoms are called "stable", while others are called "radioactive", but I can't find any source which says if stable atoms are truly stable—never spontaneously decaying—or if they simply have half-lives so long that they can, for all practical purposes, be ignored.
Does anyone...
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