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Friday, 9 October

NEET UG 2022 · Chemistry · Question 78

NEET 2022 Chemistry, question 78

Question 78 of the NEET 2022 paper (code R1) is a Chemistry question from The p-Block Elements (Class 11). Its idea, Structure and Bonding in Diborane, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q78 · Chemistry

Which of the following statement is not correct about diborane ?

  1. 1Both the Boron atoms are sp2sp^2 hybridised.Official answer
  2. 2There are two 3-centre-2-electron bonds.
  3. 3The four terminal B-H bonds are two centre two electron bonds.
  4. 4The four terminal Hydrogen atoms and the two Boron atoms lie in one plane.

Official answer: option 1 · NTA final answer key

Same idea

The only question on Structure and Bonding in Diborane

No other NEET paper from 2017–2026 tested this exact idea.

Structure and Bonding in Diborane: every question and how it was framed

The chapter

The p-Block Elements (Class 11) in ten years of NEET

13 questions from 2017–2026, asked in 7 of 10 papers, about 1.3 a paper. p-Block (Group 13-14) alone had 12.

The p-Block Elements (Class 11): questions per paper

0241’172’182’192’200’212’222’230’240’252’26