SEARCH Articles Figures Tables Five Electron Groups Trigonal Bipyramidal Geometry Shapes with Five Electron Groups (Trigonal Bipyramidal Arrangement) Shapes with Three Electron Groups (Trigonal Planar Arrangement) Space groups trigonal Space groups trigonal/hexagonal Three Electron Groups Trigonal Planar Geometry Trigonal and rhombohedral space groups Trigonal bipyramidal electron-group arrangement Trigonal planar electron-group arrangement Trigonal planar molecule carbonyl group Trigonal, Point Group 32 (03) Materials