neutron number

noun

Physics.

1. the number of neutrons in the nucleus of an atom, equal to the mass number minus the atomic number of the atom. N

neutron number

noun

1. N. the number of neutrons in the nucleus of an atom

Word History and Origins

Origin of neutron number¹

First recorded in 1950–55

Example Sentences

A more detailed analysis reveals that their lifetimes increase towards the magic neutron number 184.

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However, the neutron number 184 is still a long way from being reached, so the 30 seconds are only one step on the way.

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“Most reasonable models favour this proton and neutron number to be those that should give extra stability in the region,” says Rudolph.

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The neutron number would not have dropped if the bright surfaces were made of sulfur or silicates.

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