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Stable Elements with Radioactive Isotopes (3)These elements are generally considered stable (and have at least one stable isotope), but also have at least one naturally occurring (on earth) radioactive isotope. Generally speaking these radioactive isotopes are either very long-lived or occur as only a very small percentage of the element.
Click any element tile below to get the full entry for that element, or click on the sample picture to go directly to the description of that sample.
Text and images Copyright (c) 2003 by Theodore W.Gray.
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