Internal gill of fish

VSEPR Theory

VSEPR Theory

Molecule Type	Shape[12]	Electron arrangement†[12]	Geometry‡[12]	Examples
AX2E0	Linear			BeCl2,[1] HgCl2,[1] CO2[11]
AX2E1	Bent			NO− 2,[1] SO2,[12] O3,[1] CCl2
AX2E2	Bent			H2O,[12] OF2[17]
AX2E3	Linear			XeF2,[12] I− 3,[18] XeCl2
AX3E0	Trigonal planar			BF3,[12] CO2− 3,[19] NO− 3,[1] SO3[11]
AX3E1	Trigonal pyramidal			NH3,[12] PCl3[20]
AX3E2	T-shaped			ClF3,[12] BrF3[21]
AX4E0	Tetrahedral			CH4,[12] PO3− 4, SO2− 4,[11] ClO− 4,[1] XeO4[22]
AX4E1	Seesaw (also called disphenoidal)			SF4[12][23]
AX4E2	Square planar			XeF4[12]
AX5E0	Trigonal bipyramidal			PCl5[12]
AX5E1	Square pyramidal			ClF5,[21] BrF5,[12] XeOF4[11]
AX5E2	Pentagonal planar			XeF− 5[14]
AX6E0	Octahedral			SF6,[12] WCl6[24]
AX6E1	Pentagonal pyramidal			XeOF− 5,[13] IOF2− 5[13]
AX7E0	Pentagonal bipyramidal[11]			IF7[11]
AX8E0	Square antiprismatic[11]			IF− 8, ZrF4− 8, ReF− 8
AX9E0	Tricapped trigonal prismatic (as drawn) OR capped square antiprismatic			ReH2− 9[15]

CREADIT  :  https://en.wikipedia.org/wiki/VSEPR_theory