Mass number: Difference between revisions
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|def=[[mass number]], ''A'' | |||
Sum of the numbers of protons and neutrons in an atom, molecule, or [[ion]]. | |||
:Note: When expressed as a mass in [[daltons]], mass number is equivalent to [[nominal mass]]. | |||
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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 | 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 | ||
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[[Category:Mass]] | [[Category:Mass]] |
Latest revision as of 12:19, 15 June 2013
IUPAC RECOMMENDATIONS 2013 |
Mass number |
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mass number, A
Sum of the numbers of protons and neutrons in an atom, molecule, or ion.
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Related Term(s): |
Reference(s):
IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979. Compiled by J. Inczédy, T. Lengyel, A. M. Ure. Blackwell Scientific Publications, Oxford (1997). On-line corrected version: http://www.iupac.org /publications/analytical compendium (2000). IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. |
From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013. |
Orange Book
ORANGE BOOK DEFINITION
IUPAC. Analytical Division. Compendium of Analytical Nomenclature (the Orange Book). Definitive Rules, 1979 (see also Orange Book 2023) |
Mass number |
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IUPAC 1997 Orange Book Chapter 12 |
Index of Orange Book Terms |
Gold Book
GOLD BOOK DEFINITION
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the Gold Book). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). |
Mass number |
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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 |
Index of Gold Book Terms |