NEET UG 2019 · Chemistry · Question 85
NEET 2019 Chemistry, question 85
Question 85 of the NEET 2019 paper (code P1) is a Chemistry question from The Solid State. Its idea, Formula from Void Occupancy, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.
Updated 2026-10-08
Q85 · Chemistry
A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is :
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- 3Official answer
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Official answer: option 3 · NTA final answer key
Same idea
The only question on Formula from Void Occupancy
No other NEET paper from 2017–2026 tested this exact idea.
Formula from Void Occupancy: every question and how it was framed
The chapter
The Solid State in ten years of NEET
10 questions from 2017–2026, asked in 7 of 10 papers, about 0.9 a paper. The Solid State alone had 10.