AP Chem
posted by Sonya on .
The electrondomain geometry and molecular geometry of iodine trichloride are __________ and __________, respectively.
The answer is trigonal bipyramidal, Tshaped, respectively I do not understand the approach
PLEASE EXPLAIN HOW YOU GOT THE ANSWER!!!

Iodine trichloride is composed of 1 Iodine and 3 Chlorines. Each atom has 7 electrons in their valence electron shell. The chlorine atoms will have six electrons each around them, but the other remaining electron from each chlorine will be able to participate in a bond with Iodine. Iodine in return will share one electron each, with each chlorine, and the remaining four will be in pairs surrounding chlorine. Since there are 5 groups of two electrons for iodine, 2 lone groups around Iodine and three groups participating in bonds with the chlorines, you look at a chart on the web or in your text and look for the name of the group corresponding to 5 groups of two electrons for the central atom to determine the electrondomain geometry. You look within the group to identify the molecular geometry of the structure for the central atom that has two lone pairs of electrons surrounding it.

Iodine trichloride is composed of 1 Iodine and 3 Chlorines. Each atom has 7 electrons in their valence electron shell. The chlorine atoms will have six electrons each around them, but the other remaining electron from each chlorine will be able to participate in a bond with Iodine. Iodine in return will share one electron each, with each chlorine, and the remaining four will surround chlorine in two pairs. Since there are 5 groups of two electrons for iodine, 2 lone groups around Iodine and three groups participating in bonds with the chlorines, you look at a chart on the web or in your text and look for the name of the group corresponding to 5 groups of two electrons for the central atom to determine the electrondomain geometry. You look within the group to identify the molecular geometry of the structure for the central atom that has two lone pairs of electrons surrounding it to determine the molecular geometry.
I had a couple of typos that may have made this unclear.