Question

Differentiate between lanthanoides and actinoides.

Answer 1

Lanthanide	Actinides
They show $+2$ and $+4$ oxidation states in few cases besides $+3$	They show higher oxidation states of $+4,+5,+6,+7$ besides $+3$
Except promethium , they are non-radioactive	All acttinides are radioactive
They do not form oxoions	They form oxoions
The compounds of lanthanides are less basic	Actinides compounds are more basic
They have less tendency of complex formation	They have great tendency of complex formation