Name the members of the lanthanoid series which exhibit +4 oxidation state and those which exhibit +2 oxidation state.
Name the members of the lanthanoid series which exhibit +4 oxidation state and those
which exhibit +2 oxidation state. Try to correlate this type of behavior with the electronic
configurations of these elements.
6 views
1 Answers
The lanthanides that exhibit +2 and +4 states are shown in the given table. The atomic numbers of the elements are given in the parenthesis.
| +2 | +4 |
| Nd (60) | Ce (58) |
| Sm (62) | Pr (59) |
| Eu (63) | Nd (60) |
| Tm (69) | Tb (65) |
| Yb (70) | Dy (66) |
Ce after forming Ce4+ attains a stable electronic configuration of [Xe].
Tb after forming Tb4+ attains a stable electronic configuration of [Xe] 4f7.
Eu after forming Eu2+ attains a stable electronic configuration of [Xe] 4f7.
Yb after forming Yb2+ attains a stable electronic configuration of [Xe] 4f14.
6 views
Answered