Polonium (Po)
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References and Notes for Polonium ( Po )
C66a G. W. Charles, J. Opt. Soc. Am. 56, 1292 (1966). The adopted value for the Po I ionization energy is intermediate between the two values 67840 and 67885 cm-1 obtained in this reference.
CHPT55 G. W. Charles, D. J. Hunt, G. Pish and D. L. Timma, J. Opt. Soc. Am. 45, 869 (1955).