Question

The geometries of the species [Br3]⁺, [Br3]⁻ and [BrF3] are, respectively,

• A. linear, trigonal bipyramidal and trigonal bipyramidal
• B. linear, linear and trigonal planar
• C. tetrahedral, trigonal bipyramidal and trigonal bipyramidal
• D. tetrahedral, trigonal pyramidal and trigonal planar

Hint:

The geometry of molecules can be predicted using the VSEPR theory based on the number of bonding pairs and lone pairs of electrons.

Answer 1

The Correct Option is C

Step 1: Understanding the geometry of the species.
The geometry of the species depends on the electron pair repulsion and the number of bonding atoms. \( \text{[Br}_3\text{]}^+ \) has a linear geometry, \( \text{[Br}_3\text{]}^- \) has a trigonal bipyramidal geometry, and \( \text{[BrF}_3\text{]} \) has a trigonal bipyramidal geometry.

Step 2: Analyzing the options.
(A) Correct: This is the correct geometry configuration for the species.
(B), (C), (D): Incorrect, as these do not correspond to the correct geometries for these species.

Step 3: Conclusion.
The correct answer is (A).