Isotone
One of a set of nuclides that contain the same number of neutrons but different numbers of protons.
Formula / equation
same N, different Z
Unit
Dimensionless
In depth
Isotones are useful in nuclear structure studies because trends across an isotone series isolate the effect of proton number on binding energy and stability. Nuclides with a magic neutron number form especially stable isotone families.
Examples in the real world
Carbon-14, nitrogen-15 and oxygen-16 each contain 8 neutrons.