an isotope of polonium: polonium 210.
Origin of radium F
First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for radium f
Historical Examples of radium f
Turning to the other end of the radium series we are led to ask what becomes of radium-F when in turn it disintegrates?Darwin and Modern Science
A.C. Seward and Others