Index | Element | I.S. |  Z  | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
1 | Cr | He | 24 | 1S2 | 7480 | +7.5E0 | SEMP | R42 | |
2 | Cr | He | 24 | 1S2 | 7481.82 | THR | R8 | ||
3 | Cr | He | 24 | 1S2 | 1S0 | 7481.8 | COMP | R300 | |
4 | Cr | He | 24 | 1S2 | 1S0 | 7481.8 | 6.E-1 | 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