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Chemistry · 2026 · 4 marks
NEET 2026 · 3 May · Code 11 · Q66
Although +3 oxidation state is most common in lanthanoids, cerium still shows +4 oxidation state because:
Although +$\displaystyle 3$ oxidation state is most common in lanthanoids, cerium still shows +$\displaystyle 4$ oxidation state because :
Official answer
From NTA’s provisional answer key for this paper. NTA published no final key for it.
(4)
After losing one more electron, it acquires $\displaystyle 4 \mathrm{f}^0$ electronic configuration.
More from The d- and f-Block Elements
NEET (UG) 2026 Chemistry question, with the answer from NTA’s provisional answer key. Where our answers come from.