CBSE 2026 · Region 5 · Set 1 · Q4 · 1 mark
Actinoids show larger number of oxidation states :
Official answer
From CBSE’s own marking scheme for this paper.
(D)
due to comparable energies of 5f, 6d and 7s orbitals
The d-and f-Block ElementsThe ActinoidsUnderstandmcqmedium
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CBSE Class 12 Chemistry past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.