neutron number

noun Physics.
the number of neutrons in the nucleus of an atom, equal to the mass number minus the atomic number of the atom. Symbol: N

1950–55 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
neutron number
N the number of neutrons in the nucleus of an atom

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
The nuclear structure group studies the structural evolution of the atomic nucleus as a function of proton and neutron number.
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