Isobar (nuclide)
= Isobar
{disambiguate=nuclide}
{wiki}
= Nuclear isobar
{synonym}
<Nuclear isobars> are different <nuclides> with the same <mass number> $A$ and different <atomic numbers> $Z$. They differ from <isotopes>, which have fixed $Z$. <Beta decay> connects neighboring <nuclear isobars>.