The chemistry of the actinoid elements is not so smooth as that of the Lanthanoids. Justify this statement by giving some examples from the oxidation state of these elements.

Question

$\begin{array}{1 1} \text{(a) Lanthanoids does not show oxidation states , Whereas actinoids display a large number of oxidation states.} \\ \text{(b) Lanthanoids primarily show three oxidation states (+1, +3, +5) , Whereas actinoids display a large number of oxidation states.} \\ \text{(c) Lanthanoids primarily show three oxidation states (+2, +5, +6) , Whereas actinoids display a large number of oxidation states.} \\\text{(d) Lanthanoids primarily show three oxidation states (+2, +3, +4) , Whereas actinoids display a large number of oxidation states.}\end{array}$