Compare the chemistry of actinides with that of
the lanthanides with special reference to
chemical reactivity.

Compare the chemistry of actinides with that of the lanthanides with special reference to atomic and ionic sizes.

Compare the chemistry of actinides with that of Lanthanides with special reference to oxidation state

Compare the chemistry of actinides with that of the lanthanoids with special reference to electronic Configuration.

Why do lanthanoids have very similar chemical reactivity?

Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following points: oxidation states

Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following points: ionisation enthalpies

Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following points: electronic configurations

Where is spororpollenin present plants. State its significance with reference to its chemical nature?