| atomic h. |
the product of the atomic weight of an element and its specific heat.
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| atomic m. |
atomic weight; used particularly when describing a single isotope of a nuclide.
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| atomic mass u. |
the unit mass equal to 1/12 the mass of the nuclide of carbon-12, equivalent to 1.657 × 10-24 gm. Called also atomic weight u. and dalton.
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| atomic n. |
the number of protons in the nucleus of a nuclide; all the atoms of a chemical element have the same atomic number; sometimes indicated by a subscript preceding the symbol of a chemical element (e.g., 1H).
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| atomic t. |
the theory that the molecules of a substance are made up of one or more atoms, each representing a definite amount of the element, which amount does not vary in the molecule, whatever combinations the molecule may enter.
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