Nuclear isomers, a specific class of nuclear species discovered by Otto Hahn, are defined as atoms t — Nuclear Chemistry and Radioactivity Chemistry Question

💡 Solution & Explanation

Nuclear isomers (like Uranium-X and Uranium-Z) are nuclei of the same isotope (same $Z$ and same $A$, hence same number of $p, n, e^-$) that exist in different internal energy states (one in ground state, the other in an excited, metastable state). This difference in energy manifests as significantly different radioactive properties and half-lives.