1、Molecular Polarity TableA molecule is non polar if all surrounding atoms are same.A molecule is polar if surrounding atoms are different.A molecule is polar if central atom has one or more lone pair of electrons.BP: Bond pair LP: Lone pair A: Central atom X: Surrounding atomsNumber ofelectron groups
2、Type ofelectron pairsVSEPR notationName of Molecular shapeExample Polarity2 2 BP AX2 BeF2 Non-polar3 3 BP AX3 BF3 Non-polar3 2 BP, 1 LP AX2E SnCl2 Polar4 4 BP AX4 CF4 Non-polar4 3 BP, 1 LP AX3E PCl3 Polar4 2BP, 2LP AX2E2 H2S Polar5 5BP AX5 SbCl5 Non-polar5 4BP, 1LP AX4E TeCl4 Polar5 3BP, 2LP AX3E2 BrF3 Polar5 2 BP, 3LP AX2E3 XeF2 Polar6 6 BP AX6 SF6 Non-polar6 5BP, 1LP AX5E BrF5 Polar6 4 BP, 2LP AX4E2 XeF4 Polar