NIST Atomic Spectroscopic Database
Ground States and Ionization Energies: Pr
Praseodymium, Z = 59
- Pr I
- Pr I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f36s2 4Iº9/2
- Ionization energy 44070 ± 40 cm-1
- References on
Energy Levels
- Pr II
- Ce I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f3(4Iº9/2)6s (9/2,1/2)º4
- Ionization energy 85100 ± 600 cm-1
- References on
Energy Levels
- Pr III
- La I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f3 4Iº9/2
- Ionization energy 174407 ± 20 cm-1
- References on
Energy Levels
- Pr IV
- Ba I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f2 3H4
- Ionization energy 314400 ± 200 cm-1
- References on
Energy Levels
- Pr V
- Cs I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f 2Fº5/2
- Ionization energy 464000 ± 400 cm-1
- References on
Energy Levels
