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Platinum-194

Main isotopes of platinum
Iso­tope Decay
abun­dance half-life mode energy (MeV) pro­duct
190Pt 0.012% 6.5×1011 y α 3.252 186Os
192Pt 0.782% is stable with 114 neutrons
193Pt syn 50 y ε 193Ir
194Pt 32.864% is stable with 116 neutrons
195Pt 33.775% is stable with 117 neutrons
196Pt 25.211% is stable with 118 neutrons
198Pt 7.356% is stable with 120 neutrons
Standard atomic weight (Ar)
  • 195.084(9)

Natural platinum (78Pt) occurs in five stable isotopes (192Pt, 194Pt, 195Pt, 196Pt, 198Pt) and one very long-lived (half-life 6.50×1011 years) radioisotope (190Pt). There are also 31 known artificial radioisotopes, the longest-lived of which is 193Pt with a half-life of 50 years. All other isotopes have half-lives under a year, most under a day.



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