JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 18 March 2021, Shift 2, Chemistry Q52

Question 52 of 90 in this shift, Chemistry question 22 of 30, Section B.

The number of species below that have two lone pairs of electrons in their central atom is __________. (Round off to the Nearest Integer).

\mathrm{SF_4}

\mathrm{BF_4^-}

\mathrm{ClF_3}

\mathrm{AsF_3}

\mathrm{PCl_5}

\mathrm{BrF_5}

\mathrm{XeF_4}

\mathrm{SF_6}

Official answer

NTA final key.

Chapter: Chemical Bonding and Molecular Structure
Topic: VSEPR Theory
Idea tested: Trigonal Bipyramidal Positions

Same idea in other shifts

Asked 5× in all

4 Apr 2025, Shift 2 · Q56Given below are two statements : Statement (I) : For $\mathrm{ClF_3}$ (with lone pairs on Cl), all three possible structures may be drawn…MediumTwo statementsHas a figure
1 Feb 2024, Shift 1 · Q82The number of molecules/ion/s having trigonal bipyramidal shape is ________. $\mathrm{PF_5}$ , $\mathrm{BrF_5}$ , $\mathrm{PCl_5}$ ,…MediumNumerical value
27 Jun 2022, Shift 2 · Q62Identify the **incorrect** statement for $\mathrm{PCl_5}$ from the following.EasySingle correct
8 Jan 2020, Shift 2 · Q49Complexes ( $\mathrm{ML_5}$ ) of metals Ni and Fe have ideal square pyramidal and trigonal bipyramidal geometries, respectively. The sum of…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.