Mass number
From Mass Spectrometry Terms
| PROVISIONAL RECOMMENDATION |
| Mass number |
|---|
| The sum of the protons and neutrons in an atom, molecule or ion. |
| Mass spectrometry terms project – included in submission Draft 0 |
| Wikipedia link: Mass number |
Orange Book term
| ORANGE BOOK DEFINITION |
| Mass number |
|---|
| IUPAC Orange Book Chapter 12 |
| GOLD BOOK DEFINITION |
| Mass number |
|---|
|
Total number of heavy particles (protons and neutrons jointly called nucleons) in the atomic nucleus. Also called nucleon number. Symbol m in mass spectrometry. Source: Green Book, p. 20 Red Book, p. 35 PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 980 PAC, 1991, 63, 1541 (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)) on page 1545 |
| IUPAC Gold Book |
