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Solution: What are the expected bond angles in ICl4+?a. 90°b. 109.5°c. 120°d. 180 °

Problem

What are the expected bond angles in ICl4+?

a. 90°

b. 109.5°

c. 120°

d. 180 °

Solution

We’re being asked to identify the bond angle in ICl4+. Since we don’t know the Lewis structure for ICl4+, we need to do the following steps:


Step 1: Determine the central atom in this molecule.

Step 2: Calculate the total number of valence electrons present.

Step 3: Draw the Lewis structure for the molecule.

Step 4: Determine the number of electron groups around the indicated atom.

Step 5: Determine the electron geometry and bond angle using this:


Electron Regions          Electronic Geometry          Bond Angles

2                                      linear                                    180˚

3                                      trigonal planar                      120˚

4                                      tetrahedral                            109.5˚

5                                      trigonal bipyramidal              90˚, 120˚, and 180˚

6                                      octahedral                            90˚ and 180˚


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