PI5 \mathrm {PI_5}PI5 is a trigonal pyramidal molecule
XeF4 \mathrm {XeF_4}XeF4 is a tetrahedral molecule
ICl5 \mathrm {ICl_5}ICl5 is a square pyramidal molecule
SO42−\mathrm {SO_4^{2-}}SO42− is a square planner molecule