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Chemical Sciences: A Manual for CSIR-UGC National Eligibility Test for Lectureship and JRF/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

References

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  1. ↑ Yergey, James (1983). "Isotopic distributions in mass spectra of large molecules" (PDF). Analytical Chemistry. 55: 353–356. doi:10.1021/ac00253a037. Retrieved 2007-09-04. {{cite journal}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
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