Thorium is a radioactive element with several isotopes, the most notable of which are: 1. **Thorium-232 (Th-232)**: This is the most abundant and stable isotope of thorium, making up about 99.98% of naturally occurring thorium. It has a half-life of approximately 14.05 billion years and is used in nuclear reactors and as a source material for nuclear fuel.
Thorium-232 is a naturally occurring isotope of thorium, which is a heavy, radioactive element with the atomic number 90. It is one of the most stable isotopes of thorium and has a half-life of about 14.05 billion years, making it significantly long-lived compared to other radioactive isotopes.
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