| Index | Element | I.S. | Z | Conf. | Level | ¡÷E (eV) | Method | Ref. | |
| 1 | Mg | F | 12 | 1S22S22P5 | 107.7 | THR | R50 | ||
| 2 | Mg | F | 12 | 1S22S22P5 | 109.25 | COMP | R1 | ||
| 3 | Mg | F | 12 | 2P5 | 2P3/2 | 109.24252 | COMP | R400 | |
| 4 | Mg | F | 12 | 2P5 | 2P3/2 | 109.2663 | 1.2E-3 | COMP | R14 |
| 5 | Mg | F | 12 | 2P5 | 2P3/2 | 109.24 | COMP | R325 | |
| 6 | Mg | F | 12 | 2P5 | 2P3/2 | 109.262 | COMP | R408 |
¡¾Close¡¿
'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