Naturally occurring platinum (78Pt) consists of five stable isotopes (192Pt, 194Pt, 195Pt, 196Pt, 198Pt) and one long-lived (half-life 4.83×1011 years) radioisotope (190Pt). There are also 34 known synthetic radioisotopes ranging from 165Pt to 204Pt, and longest-lived of those is 193Pt with a half-life of 50 years.
Naturally occurring platinum (78Pt) consists of five stable isotopes (192Pt, 194Pt, 195Pt, 196Pt, 198Pt) and one long-lived (half-life 4.83×1011 years) radioisotope (190Pt). There are also 34 known synthetic radioisotopes ranging from 165Pt to 204Pt, and longest-lived of those is 193Pt with a half-life of 50 years.
Source: Wikipedia "Isotopes of platinum" · CC BY-SA 4.0
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