
Radium-226 () is the longest-lived isotope of radium, with a half-life of 1600 years. It is an intermediate product in the decay chain of uranium-238; as such, it can be found naturally in uranium-containing minerals.
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Radium-226 () is the longest-lived isotope of radium, with a half-life of 1600 years. It is an intermediate product in the decay chain of uranium-238; as such, it can be found naturally in uranium-containing minerals.
==Occurrence and decay== thumb|upright=1.25|The decay-chain of uranium-238, which contains radium-226 as an intermediate decay product
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).