Francis, Arthur W., Sr. Formerly, Union Carbide Corporation, Tarrytown, New York.
Vos, Willem L. Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution, Washington, DC.
Abraham, Bernard M. Formerly, Solid State Science Division, Argonne National Laboratory, Argonne, Illinois.
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A gaseous chemical element, He, atomic number 2 and atomic weight 4.0026. Helium is one of the noble gases in group 18 of the periodic table. It is the second lightest element. The world's chief source of helium is a group of natural gas fields in the United States. See also: Noble gases; Periodic table
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