Even–even nucleus

Short description: Nucleus with an even number of neutrons and an even number of protons

In atomic physics, even–even (EE) nuclei are nuclei with an even number of neutrons and an even number of protons. Even-mass-number nuclei, which comprise 151/251 = ~60% of all stable nuclei, are bosons, i.e. they have integer spin. The vast majority of them, 146 out of 151, belong to the EE class; they have spin 0 because of pairing effects.[1]

## See also

* Even and odd atomic nuclei
* Nuclear shell model

## References

1. ↑ Evans, Robley D. (1955), The Atomic Nucleus, New York: McGraw-Hill

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