Index | Element | I.S. |  Z  | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
1 | Nb | Li | 41 | 1S22S | 5425.59 | THR | R5 | ||
2 | Nb | Li | 41 | 1S22S | 5425.87 | THR | R6 | ||
3 | Nb | Li | 41 | 1S22S | 5426.32 | +5.4E-1 | SEMP | R40 |
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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