NEET UG 2017 · Chemistry · Question 68
NEET 2017 Chemistry, question 68
Question 68 of the NEET 2017 paper (code A) is a Chemistry question from The d- and f-Block Elements. Its idea, Variable Oxidation States of Actinoids, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 3.
Updated 2026-10-08
Q68 · Chemistry
The reason for greater range of oxidation states in actinoids is attributed to
- 1the radioactive nature of actinoids
- 2actinoid contraction
- 35f, 6d and 7s levels having comparable energiesOfficial answer
- 44f and 5d levels being close in energies
Official answer: option 3 · CBSE official answer key
Same idea
The only question on Variable Oxidation States of Actinoids
No other NEET paper from 2017–2026 tested this exact idea.
Variable Oxidation States of Actinoids: every question and how it was framed
The chapter
The d- and f-Block Elements in ten years of NEET
21 questions from 2017–2026, asked in 10 of 10 papers, about 2.0 a paper. d- and f-Block Elements alone had 21.