Index | Element | I.S. |  Z  | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
1 | K | He | 19 | 1S2 | 4610.81 | THR | R8 | ||
2 | K | He | 19 | 1S2 | 4611 | +4.6E0 | SEMP | R42 | |
3 | K | He | 19 | 1S2 | 1S0 | 4611.075 | COMP | R400 | |
4 | K | He | 19 | 1S2 | 1S0 | 4610.8 | 9.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