Question

which element shows +4 oxidation state in lanthanoide series​

Answer 1

Answer:

Due to this reason Ce+4 is an oxidising agent. Tb4+ ion is stabilized due to half filled f-subshell i.e., [Xn] 4f7. It also acts as an oxidant. Europium (63) and ytterbium (70) show +2 oxidation state, this acts as reducing agents because they can be converted into common oxidation state +3.

Answer 2

Answer:

Only tin is capable of exhibiting stable +4 oxidation state while others cannot. Sn

+4

state is stable and forms SnCl

4

compound.