Index | Element | I.S. |  Z  | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
1 | N | Be | 7 | 1S22S2 | 77.472 | +1.E-3 | EXP | R11 | |
2 | N | Be | 7 | 1S22S2 | 77.474 | COMP | R1 | ||
3 | N | Be | 7 | 1S22S2 | 77.5318 | +7.8E-3 | THR | R10 | |
4 | N | Be | 7 | 2S2 | 1S0 | 77.47354 | 3.9E-04 | COMP | R400 |
5 | N | Be | 7 | 2S2 | 1S0 | 77.472 | COMP | R325 | |
6 | N | Be | 7 | 2S2 | 1S0 | 77.472 | COMP | R408 |
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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