Natural silver is almost exactly: 51.84% 107Ag 48.16% 109Ag
Meaning your silver bar/coin consists of two isotopes where one of them has 2 neutrons more than the other.
What is interesting about the 107 isotope is that is has an nucleus excited state with super long lifetime of about 44,3 seconds !! with a ultra extraordinarily sharp nuclear resonance. (well defined energy profile).
Whatever the use cases of this feature might be, it is super interesting
The closest other element with similar feature is Iron – 57 with a lifetime of 600 million times shorter., around 0,0000001 seconds !
submitted by /u/WhatsUp_Dude
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