What are the similarities between lanthanides and actinides. - Vidyadip

Question

What are the similarities between lanthanides and actinides.

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Answer

Lanthanides and actinides show similarities as follows :

Both, lanthanides and actinides show+ 3 oxidation state.
In both the series, the f-orbitals are filled gradually.
Ionic radius of the elements in both the series decreases with increase in atomic number.
Electronegativity in both the series is low for all the elements.
They all are highly reactive.
The nitrates, perchlorates and sulphates of all elements are soluble while their hydroxides, theorides and carbonates
are insoluble.

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