Naturally occurring zinc (30Zn) is composed of the 5 stable isotopes 64Zn, 66Zn, 67Zn, 68Zn, and 70Zn with 64Zn being the most abundant (48.6% natural abundance). Twenty-eight radioisotopes have been characterised with the most stable being 65Zn with a half-life of 243.94 days, and then 72Zn with a half-life of 46.5 hours.
Naturally occurring zinc (30Zn) is composed of the 5 stable isotopes 64Zn, 66Zn, 67Zn, 68Zn, and 70Zn with 64Zn being the most abundant (48.6% natural abundance). Twenty-eight radioisotopes have been characterised with the most stable being 65Zn with a half-life of 243.94 days, and then 72Zn with a half-life of 46.5 hours.
Source: Wikipedia "Isotopes of zinc" · CC BY-SA 4.0
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