Question

Actinoid compounds are more basic than lanthanoid compounds.

(a) True

(b) False

This question was addressed to me during an online interview.

This interesting question is from D and F-Block Elements topic in chapter D and F-Block Elements of Chemistry – Class 12

Answer 1

Right choice is (a) True

Best explanation: Lanthanoids are involved in the filling of 4f- orbitals, whereas actinoids are involved in the filling of 5f-orbitals. The binding energy of 4f electrons is comparatively less than that of 5f-electrons. The compounds formed by lanthanides are less basic, whereas the compounds of actinides are highly basic.