the.com/promethium
the only rare-earth element with no stable form, glowing faint blue as it self-destructs
means A radioactive rare-earth metal (element 61) with no stable isotopes, used in luminous paint and tiny atomic batteries.
from Named for Prometheus, the Titan who stole fire from the gods to give to humankind — a fitting godfather for an element that gives off its own faint light while paying for it with self-destruction. The name was proposed in the 1940s by Grace Mary Coryell, wife of one of the chemists who confirmed the element, partly as a nod to the Promethean daring (and risk) of working with such reactive, fleeting matter.
- no stable isotope
- every version is radioactive, decaying constantly
- named for
- Prometheus, the fire-stealing titan
- none on Earth
- naturally exists only in dying stars
- glows blue
- radiation makes it eerily luminescent
- found late
- discovered in 1945 nuclear reactor byproducts
promethium-147 — most stable isotope with 2.6 year half-life, used in nuclear batteries and self-luminous watch dials
oak ridge national laboratory — tennessee facility where promethium was first isolated in 1945 from uranium fission products