Discovered by G. T. Seaborg, R. A. James, I. O. Morgan, and
A. Ghiorso at Chicago, IL., USA.
Remarks
Radioactive, silvery metal which does not occur naturally. Attacked by
air, steam, and acids, but not alkalis. Commonly used in ionization smoke detectors because of the
alpha decay.
References
Emsley, J., 1991; THE ELEMENTS : Sec. Ed.,
Clarendon Press, Oxford, 251 p.