Index | Element | I.S. |  Z  | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
1 | Fe | B | 26 | 1S22S22P | 1799.03 | +1.8E-1 | EXP | R25 | |
2 | Fe | B | 26 | 1S22S22P | 1799.03 | +1.8E-1 | SEMP | R101 | |
3 | Fe | B | 26 | 2P | 2P1/2 | 1799 | COMP | R303 | |
4 | Fe | B | 26 | 2P | 2P1/2 | 1799 | 4.E0 | COMP | R401 |
5 | Fe | B | 26 | 2P | 2P1/2 | 1799 | COMP | R404 |
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'I.S.' ---------- the isoelectronic sequence
'Z' ---------- atomic number
'Conf.' ---------- configuration
'Level' ---------- the notation of energy level
'E' ---------- the ionization potential
'¡÷E' ---------- error for ionization potential
'Method' ---------- the method by which the data is produced
'Ref.' ---------- the reference