Paper: CSIR-NET June 2013 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: VSEPR Geometry · Marks: 2 · Difficulty: Medium
According to VSEPR theory, the geometry (with lone pair) around the central iodine in $\mathrm{I}_{3}^{+}$and $\mathrm{I}_{3}^{-}$ ions respectively are
(a)tetrahedral and tetrahedral
(b)trigonal bipyramidal and trigonal bipyramedal
(c)tetrahedral and trigonal bipyramidal
(d)tetrahedral and octahedral
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
I₃⁺: AX₂E₂, tetrahedral electron geometry (bent); I₃⁻: AX₂E₃, trigonal bipyramidal electron geometry (linear).