Nucleon number: Difference between revisions

Revision as of 01:12, 19 January 2005

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See proposed definition on the Nucleon number discussion page.

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-== Proposed Entry ==
+{{stub}}
-The [[nucleon number]] is the number of nucleons in a molecule.
-It is a unitless physical property with symbol ''N''.
-: ''N'' = n
-== Comments ==
+{{DiscDef}}
-There used to be another name for the same property: the [[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]].
+== Related Terms ==
-: ''M'' = z '''Da'''
-where z is an integer value.
+[[Mass]]
+''[[m/z]]''
-== References ==
-see [[Mass]]