Data:First ionization energies of the elements
Further information: Ionization energy
| Z | Element | Ionization energy | Ref. | |
|---|---|---|---|---|
| (eV) | (kJ mol−1) | |||
| 1 | Hydrogen | 13.598 44 | NIST | |
| 2 | Helium | 24.587 41 | NIST | |
| 3 | Lithium | 5.391 72 | NIST | |
References
Moore, Charlotte E. Ionization potentials and ionization limits derived from the analyses of optical spectra. Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.) 1970, 34, 1–22, <http://www.nist.gov/data/nsrds/NSRDS-NBS34.pdf>.
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