The correct shape and I$-$I$-$I bond angles respectively in $\mathrm{I_3^-}$ ion are :

Distorted trigonal planar; $135^\circ$ and $90^\circ$

T-shaped; $180^\circ$ and $90^\circ$

JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 24 February 2021, Shift 2, Chemistry Q32

Question 32 of 90 in this shift, Chemistry question 2 of 30, Section A.

The correct shape and I

-

-

I bond angles respectively in

\mathrm{I_3^-}

ion are :

(1)Linear; $180^\circ$ Official answer
(2)Distorted trigonal planar; $135^\circ$ and $90^\circ$
(3)T-shaped; $180^\circ$ and $90^\circ$
(4)Trigonal planar; $120^\circ$

Official answer

Option 1

NTA final key.

Chapter: Chemical Bonding and Molecular Structure
Topic: VSEPR Theory
Idea tested: Linear Geometry of Trihalide Ions

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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.