Review Article
Methods of Calculating Ionization Energies of Multielectron (Five or More) Isoelectronic Atomic Ions
Table 1
Symbols, conversion factors, and constants (to 9 significant figures).
| | Symbol/constant | Value/comment/definition |
| | 0.00729735254 | | Number of electrons remaining after ionization | | eV | 1 electron volt = 1.60217648 × 10−19 Joules | | Principal quantum number | | Electron velocity | | Number of residual electron-electron interactions | | Mass number | | Reduced mass (see Table 8 for individual values) | | Screening constant for the ionizing electron | | Screening for the remaining electron(s) after ionization | | Screening for the remaining electron(s) before ionization | | Proton number (nuclear charge) | | Velocity of light 2.99792458 × 108 ms−1 | | Electron rest mass 9.10938215 × 10−31 kg | | Proton rest mass 1.67262164 × 10−27 kg | | Electron charge 1.60217649 × 10−19 C | | Planck’s constant 6.62606896 × 10−34 Js | | 8.85418782 × 10−12 Fm−1 |
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