Question

answer the questions in the table below about the shape of the tetrachloroiodide (icl4 -) anion. what word or two - word phrase best describes the shape of the icl4 - anion? what is the angle between the iodine - chlorine bonds? (if there is more than one angle, pick the smallest.)

Explanation:

Step1: Determine the electron - pair geometry and molecular geometry

The central iodine atom in $ICl_4^-$ has 7 valence electrons, plus 1 extra electron due to the negative charge, for a total of 8 electrons. It forms 4 bonds with chlorine atoms and has 2 lone - pairs. Using VSEPR (Valence - Shell Electron - Pair Repulsion) theory, the electron - pair geometry is octahedral. But considering only the bonding pairs and ignoring the lone - pairs, the molecular geometry is square planar.

Step2: Find the bond angle

In a square planar geometry, the smallest angle between the iodine - chlorine bonds is 90°.

Answer:

What word or two - word phrase best describes the shape of the $ICl_4^-$ anion? Square planar
What is the angle between the iodine - chlorine bonds? (If there is more than one angle, pick the smallest.) 90