Nominal mass
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The nominal mass is the integer mass of the most abundant naturally occurring stable isotope of an element. The nominal mass of a molecule is the sum of the nominal masses of the elements in its empirical formula.[1]
H2O = 18
[edit] See also
[edit] References
- ^ Yergey, James; David Heller, Gordon Hansen, Robert J. Cotter, and Catherlne Fenselau (1983). "Isotopic distributions in mass spectra of large molecules" (PDF). Analytical Chemistry 55: 353–356. doi:.
