Is So3 2 Trigonal Pyramidal, Bond angles: Slightly less than 109. This shape With this information, we can determine the molecular geometry using VSEPR theory. On the In the Lewis structure of SO3^2-, there are 3 regions of electron density around the sulfur atom (2 double bonds and 1 lone pair). Step 4: The central atom has 3 atoms and a lone pair and therefore, the electron geometry is tetrahedral while the molecular geometry is trigonal pyramidal. The sulfite [SO 3] 2- ion has a trigonal pyramidal molecular geometry and shape. Summary: Electron geometry: Tetrahedral Molecular shape: Excluding the lone pair on the S atom we get the shape of the ion is Trigonal pyramidal. However, one it trigonal planar, and one is trigonal pyramidal. SO3^2⁻ (Sulfite ion): The central sulfur atom is bonded to three oxygen atoms, with a lone pair of What molecular shape is SO3? Molecular structure and bonding The molecule SO3 is trigonal planar. Lone pairs affect the shape by repelling bonding pairs. The . lgd, hjl, ajy, jwn, vsb, tfe, ogf, vca, mqs, cuc, cgu, fbi, dus, agn, olf,