Molecular Structure: VSEPR: Triangle-based shapes (AXnEm, n+m=3)




Arrangement of Electron Pairs AX3 AX2E
SO3 SO2

Triangle
Bent
SO3 SO2

All these geometries were theoretically found at the DFT-B3LYP level of theory (6-31G(d,p) basis sets for light atoms and Stuttgart ECPs for the heaviest ones)

More information about VSEPR