What is the value of the bond angle in I 3-?
We’re being asked to identify the bond angle in I3–. Since we don’t know the Lewis structure for I3–, 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 geometry and bond angle.
Step 1: Since only iodine is present, one of the I atoms will be the central atom.