Nucleon number: Difference between revisions

Latest revision as of 21:48, 12 April 2014

Nucleon number
DRAFT DEFINITION

Related Term(s): mass number
Reference(s):
This is an unofficial draft definition presented for information and comment. Recommended terms \| Full list of terms

Nucleon number
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).
http://goldbook.iupac.org/N04248.html Synonymous with mass number. Source: Green Book, 2nd ed., p. 20
IUPAC Gold Book
Index of Gold Book Terms

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-== Proposed Entry ==
+{{def|rel=[[mass number]]}}
-The [[nucleon number]] is the number of nucleons in a molecule.
-It is a unitless physical property with symbol ''N''.
-: ''N'' = n
-== Comments ==
+{{gold|http://goldbook.iupac.org/N04248.html
-There used to be another name for the same property: the [[Mass number]].
+Synonymous with [[mass number]].
-This name, however, is misleading because a unitless quantity should not be called "[[Mass|mass]]".
-The symbol for the quantity nucleon number used to be ''m'', which is even more unfortunate because ''m'' is the official symbol of a mass quantity.
-The [[Nominal Mass|nominal mass]] ''M'' has a simillar meaning as the nuclear number, but it is not dimensionless. It is a mass measured in the [[Atomic Mass Unit]], also called [[Dalton]].
+Source: Green Book, 2nd ed., p. 20
-: ''M'' = z '''Da'''
+}}
-where z is an integer value.
+[[Category:General]]
+[[Category:Mass]]
-== References ==
-see [[Mass]]