Assertion: fermium | /r/HasProperty | identified
Facets:
Source sentences:
text: The eighth transuranium element to be discovered, fermium was first identified (1952) as fermium-255 ( half-life about 20 hours) by Albert Ghiorso and his coworkers, who discovered it in residue from the first thermonuclear test explosion in the South Pacific.
text: Fermium was first identified in the form of the 255 Fm (half-life 20 hours).