americium -
The chemical element symbol Am with an atomic number of 95.
Wikipedia
Americium is a synthetic element that has the symbol Am and atomic number 95. A radioactive metallic element, americium is an actinide that was obtained in 1944 by Glenn T. Seaborg who was bombarding plutonium with neutrons and was the fourth transuranic element to be discovered.
OmegaWiki Dictionary
Ω
americium Chemical element with symbol Am and atomic number 95.