NIST Atomic Spectroscopic Database
Ground States and Ionization Energies: Tb
Terbium, Z = 65
- Tb I
- Tb I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f96s2 6Hº15/2
- Ionization energy 47295 ± 5 cm-1
- References on
Energy Levels
- Tb II
- Gd I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f96s 6Hº15/2
- Ionization energy 92900 ± 600 cm-1
- References on
Energy Levels
- Tb III
- Eu I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f9 6Hº15/2
- Ionization energy 176700 ± 800 cm-1
- References on
Energy Levels
- Tb IV
- Sm I isoelectronic sequence
- Ground state [Kr] 4d105s25p64f8 7F6
- Ionization energy 317500 ± 800 cm-1
- References on
Energy Levels
