Iridium Isotopes: No entries match the specified criteria

Note that no iridium isotopes meet the strict filter applied for this list. The filter is narrow, so the search returns an empty set. Iridium Isotopes include two naturally occurring, stable isotopes (Ir‑191 and Ir‑193) and many radioactive nuclides, but none satisfy every restrictive condition at once.

Understand why the criteria create an empty result. Nuclear stability depends on proton and neutron counts. Iridium sits between stable and highly radioactive nuclides, so most isotopes decay quickly. Long‑lived metastable states that would meet a “stable plus long‑lived isomer” rule do not exist for iridium at the thresholds typically used. As a near match, Ir‑192 is widely used in industry and medicine but is radioactive with a half‑life of about 74 days, so it fails any filter requiring geological or primordial stability.

Explore related, useful alternatives instead. Consult a full catalogue of all known iridium isotopes (stable: Ir‑191, Ir‑193; common radioisotope: Ir‑192; plus multiple short‑lived isomers). Check databases such as ENSDF, NUBASE, IAEA, or NIST for complete tables, decay modes, and recommended values. If your goal is long‑lived or primordial nuclides, consider neighboring elements (osmium or platinum isotopes) or a focused page on Ir‑192 production and uses.