Isotope

Isotope

One of two or more atoms with the same number of protons, but different number of neutrons, in their nuclei. Example: 12C, 13C, and 14C are isotopes of the same element. Isotopes have very nearly the same chemical properties, but often different physical properties (12C and 13C are stable, while 14C is radioactive).

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Part of Speech: noun
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Industry/Domain: Environment
Category: Radiation hazards
Educational Institution: Harvard University
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isotope

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A nuclide of an element having the same number of protons but a different number of neutrons.

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One of two or more species of atoms of the same chemical element that have the same atomic number and occupy the same position in the periodic table. They are nearly identical in ...

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An atom that shares the same atomic number and position as other atoms in an element but has a different number of neutrons and thus a different atomic mass.

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Atoms with the same atomic number but different numbers of neutrons; indicated by adding the mass number to the element's name, e.g., carbon 12 or 12C.

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One of two or more forms of an element that have the same number of protons (atomic number) but differing numbers of neutrons (mass numbers). Radioactive isotopes are commonly ...

corona

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The outer layer of thin and extremely hot gas that surrounds the sun and other stars. It is only visible during a total eclipse of the sun.

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Radioactive (nuclear) pollution is a special form of physical pollution related to all major life-supporting systems – air, water and soil. It is always convenient to discuss ...

greenhouse effect

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nuclide

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A general term referring to all known isotopes, both stable (~279) and unstable (~5000), of the chemical elements.

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