Stable isotope
Stable Isotope
A Stable Isotope (pronunciation: /ˈsteɪbəl ˈaɪsətoʊp/) is a variant of a particular chemical element that is not radioactive. Unlike radioactive isotopes, stable isotopes do not decay over time.
Etymology
The term "Stable Isotope" is derived from the English words "stable" and "isotope". "Stable" comes from the Latin word "stabilis", meaning firm or steadfast. "Isotope" is derived from the Greek words "isos" meaning equal, and "topos" meaning place, referring to the fact that different isotopes of an element occupy the same position on the Periodic Table.
Related Terms
- Isotope: Any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights.
- Radioactive Isotope: An isotope having an unstable nucleus that decomposes spontaneously by emission of a nuclear electron or helium nucleus and radiation, thus achieving a stable nuclear composition.
- Atomic Number: The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
- Periodic Table: A tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties.
See Also
External links
- Medical encyclopedia article on Stable isotope
- Wikipedia's article - Stable isotope
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