JEE Main 2023 · ChemistryNumerical answerNumerical valueMediumApplication

JEE Main 10 April 2023, Shift 1, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

The sum of lone pairs present on the central atom of the interhalogen

\mathrm{IF_5}

and

\mathrm{IF_7}

is __________

Official answer

NTA final key.

Chapter: The p-Block Elements
Topic: VSEPR Theory
Idea tested: Geometry vs Shape Distinction

Same idea in other shifts

Asked 5× in all

10 Apr 2023, Shift 1 · Q83The number of bent-shaped molecule/s from the following is ______________ $\mathrm{N_3^-}$ , $\mathrm{NO_2^-}$ , $\mathrm{I_3^-}$ ,…MediumNumerical value
10 Apr 2023, Shift 2 · Q82The number of molecules from the following which contain only two lone pair of electrons is ___________ $\mathrm{H_2O}$ , $\mathrm{N_2}$ ,…MediumNumerical value
30 Jul 2022, Shift 2 · Q57Consider the molecules / ions given below $\mathrm{XeO_3}$ , $\mathrm{BF_4^-}$ , $\mathrm{I_3^-}$ , $\mathrm{SF_6}$ , $\mathrm{PCl_5}$ The…MediumNumerical value
26 Jun 2022, Shift 2 · Q83Amongst $\mathrm{SF_4}$ , $\mathrm{XeF_4}$ , $\mathrm{CF_4}$ and $\mathrm{H_2O}$ , the number of species with two lone pairs of electrons is…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.