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| {{Sugdef|mass number|
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| the term "mass number" is substituted by the term [[Nucleon number|nucleon number]] for the following reasons:
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| # the physical property named mass number is dimensionless and hence not a mass
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| # the symbol m which was often used for the physical quantity mass number is reserved for mass
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| # this definition of mass number is not consistent because it is always a whole number, whereas m/z is used for real numbers
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| }}
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| ----
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| The definition on the front page should be
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| {{Sugdef|nucleon number|
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| The number of the protons and neutrons in an atom, molecule or ion.
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| ("sum of protons" is not well defined, it sould be "the sum of number of protons and number of neitrons")
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| }}
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| :--[[User:Kkmurray|K. Murray]] 18:03, 7 Jun 2005 (CDT)
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