NIST Atomic Spectroscopic Database
Ground States and Ionization Energies: Mg
Magnesium, Z = 12
- Mg I
- Mg I isoelectronic sequence
- Ground state 1s22s22p63s2 1S0
- Ionization energy 61671.05 ± .03 cm-1
- References on
Energy Levels,
Wavelengths
- Mg II
- Na I isoelectronic sequence
- Ground state 1s22s22p63s 2S1/2
- Ionization energy 121267.64 ± .05 cm-1
- References on
Energy Levels,
Wavelengths
- Mg III
- Ne I isoelectronic sequence
- Ground state 1s22s22p6 1S0
- Ionization energy 646402 ± 5 cm-1
- References on
Energy Levels,
Wavelengths
- Mg IV
- F I isoelectronic sequence
- Ground state 1s22s22p5 2Pº3/2
- Ionization energy 881285 ± 10 cm-1
- References on
Energy Levels,
Wavelengths
- Mg V
- O I isoelectronic sequence
- Ground state 1s22s22p4 3P2
- Ionization energy 1139420 cm-1
- References on
Energy Levels,
Wavelengths
- Mg VI
- N I isoelectronic sequence
- Ground state 1s22s22p3 4Sº3/2
- Ionization energy 1506300 ± 500 cm-1
- References on
Energy Levels,
Wavelengths
- Mg VII
- C I isoelectronic sequence
- Ground state 1s22s22p2 3P0
- Ionization energy 1814900 ± 500 cm-1
- References on
Energy Levels,
Wavelengths
- Mg VIII
- B I isoelectronic sequence
- Ground state 1s22s22p 2Pº1/2
- Ionization energy 2145100 ± 300 cm-1
- References on
Energy Levels,
Wavelengths
- Mg IX
- Be I isoelectronic sequence
- Ground state 1s22s2 1S0
- Ionization energy 2646000 cm-1
- References on
Energy Levels,
Wavelengths
- Mg X
- Li I isoelectronic sequence
- Ground state 1s22s 2S1/2
- Ionization energy 2964060 ± 250 cm-1
- References on
Energy Levels,
Wavelengths
- Mg XI
- He I isoelectronic sequence
- Ground state 1s2 1S0
- Ionization energy 14209908 ± 200 cm-1
- References on
Energy Levels,
Wavelengths
- Mg XII
- H I isoelectronic sequence
- Ground state 1s 2S1/2
- Ionization energy 15829955 ± 1 cm-1
- References on
Energy Levels,
Wavelengths
