Tuesday, January 27, 2009
Term of the Day
Isotope: Different atoms of an element that have the same number of protons but different numbers of neutrons. Stable isotopes do not change their nuclear structure over time. Certain isotopes called radioactive isotopes are unstable because their nuclei decay to form a simpler and thus more stable configuration.
Labels:
chemistry,
isotopes,
neutrons,
physiology,
protons,
radioactivity
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