Paper: CSIR-NET December 2014 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Marks: 2 · Difficulty: Easy
The geometries of $\left[\mathrm{Br}_{3}\right]^{+}$and $\left[\mathrm{I}_{5}\right]^{+}$respectively, are
(a)trigonal and tetrahedral
(b)tetrahedral and trigonal bipyramidal
(c)tetrahedral and tetrahedral
(d)linear and trigonal pyramidal
Answer
Answer: B ✓ checked by 4AB · confidence medium
Explanation
[Br₃]⁺ (AX₂E₂) has a tetrahedral electron-pair arrangement (bent); [I₅]⁺ is built on a central I with two bonds and three lone pairs — trigonal-bipyramidal electron geometry.