Chemistry - f-block Question with Solution | TestHub

Lanthanoid contraction is greater from element to element than actinoid contraction.

Lanthanoids can achieve higher oxidation state more easily as compare to actinoid.

${\mathrm{Pr}}^{+3},{\mathrm{Er}}^{+3},{\mathrm{Ce}}^{+4}$ ions produces colourless aquated ion.

On reaction with boiling water actinide gives a mixture of oxide \& hydride.