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Additionally, two groups of cnidarians, corals and sea anemones, exhibit six-or eight-fold symmetry. These types of symmetry are referred to as hexamerism and octamerism, respectively. It should be noted that cnidarians are not the only animals to exhibit radial symmetry.
Using the VSEPR model, predict the molecular geometries of: (a) SnCl. SOLUTION (a) The Lewis structure for the SnCl. The central Sn atom is bonded to the three Cl atoms and has one nonbonding pair on it. Therefore, the Sn atom has four electron domains around it.The resulting electron-domain geometry is tetrahedral (Table 9.1) with three of the corners occupied by the bonding pairs of electrons.sing the VSEPR model, predict the molecular geometries of: (a) SnCl. SOLUTION (a) The Lewis structure for the SnCl. The central Sn atom is bonded to the three Cl atoms and has one nonbonding pair on it. Therefore, the Sn atom has four electron domains around it.