Total number of lone pair of electrons in $\mathrm{I}_{3}^{-}$ion is :

JEE Main · 2018 · 08 Apr 2018 · Offline · Chemical Bonding and Molecular Structure

Total number of lone pair of electrons in

I_{3}^{-}

ion is :

Answer: (D)

I X_{3} X^{-}

the central iodine is bonded to two terminal iodines in a linear,

s p^{3} d

arrangement. The central atom carries three lone pairs and each of the two terminal iodines carries three more, so the total is

3 + 3 + 3 = 9

lone pairs.

JEE Main · 2018 · 08 Apr 2018 · Offline · Single correct option