Translations:Zinc/14/en

Several dozen radioisotopes have been characterized. ⁶⁵
Zn, which has a half-life of 243.66 days, is the least active radioisotope, followed by ⁷²
Zn with a half-life of 46.5 hours. Zinc has 10 nuclear isomers, of which ^69mZn has the longest half-life, 13.76 h. The superscript m indicates a metastable isotope. The nucleus of a metastable isotope is in an excited state and will return to the ground state by emitting a photon in the form of a gamma ray. ⁶¹
Zn has three excited metastable states and ⁷³
Zn has two. The isotopes ⁶⁵
Zn, ⁷¹
Zn, ⁷⁷
Zn and ⁷⁸
Zn each have only one excited metastable state.