Index | Element | I.S. |  Z  | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
1 | Ni | Be | 28 | 1S22S2 | 2289.43 | +2.3E-1 | THR | R10 | |
2 | Ni | Be | 28 | 1S22S2 | 2294.9 | +2.2E-1 | EXP | R27 | |
3 | Ni | Be | 28 | 2S2 | 1S0 | 2295 | COMP | R300 | |
4 | Ni | Be | 28 | 2S2 | 1S0 | 2295 | 5.E0 | COMP | R401 |
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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