Comparison of elements and their stable isotopes
Elements and their stable and radioactive isotopes all have the same atomic number, which means they also have the same number of protons in their nucleus. Atoms of the same chemical element that have the same atomic number but different atomic masses are called isotopes. Several different isotopes of each chemical element can be found anywhere in nature. A stable isotope means it is not radioactive at all. Twenty elements have one stable isotope, while the rest have two or more. The most stable isotopes any element has is ten. At least 1,000 radioactive isotopes occur in nature, making them more common than stable isotopes. Radioactive isotopes isotopes that can change into another isotope by splitting apart. (Lentech, 2008)
Elements and their stable and radioactive isotopes all have the same atomic number, which means they also have the same number of protons in their nucleus. Atoms of the same chemical element that have the same atomic number but different atomic masses are called isotopes. Several different isotopes of each chemical element can be found anywhere in nature. A stable isotope means it is not radioactive at all. Twenty elements have one stable isotope, while the rest have two or more. The most stable isotopes any element has is ten. At least 1,000 radioactive isotopes occur in nature, making them more common than stable isotopes. Radioactive isotopes isotopes that can change into another isotope by splitting apart. (Lentech, 2008)
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