based on data from: Martin, W. C.; Wiese, W. L. (พ.ศ. 2539) Atomic, Molecular, & Optical Physics Handbook, American Institute of Physics ISBN156396242X
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{{Information |Description=Ionization energies of neutral elements, in units of eV. |Source= *File:Ionization energies.png **based on data from: {{cite book | last=Martin | first=W. C. | coauthors=Wiese, W. L. | editors=Drake, G. W. F. | title=At