Matches in DBpedia 2016-04 for { ?s ?p "Bismuth-209 is the \"virtually stable\" isotope of bismuth with the longest half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass units). All primordial bismuth is of this isotope. It is a β−product of lead-209."@en }
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- Bismuth-209 abstract "Bismuth-209 is the \"virtually stable\" isotope of bismuth with the longest half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass units). All primordial bismuth is of this isotope. It is a β−product of lead-209.".
- Bismuth-209 comment "Bismuth-209 is the \"virtually stable\" isotope of bismuth with the longest half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass units). All primordial bismuth is of this isotope. It is a β−product of lead-209.".