SDN Members don't see this ad. (About Ads) ICl3. Correct answer is T-shape - not trigonal planar. Why? Can someone explain why ICl3 takes shape of T rather than planar? I know it is a T because of the 2 pair of non-bonding on the side of the plane. Wouldn't it be better or more favorable position if the lone pairs are on top and bottom and the 3 Cl on the horizontal plane?