Valence Shell Electron Pair Repulsion Theory

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Presentation transcript:

Valence Shell Electron Pair Repulsion Theory VSEPR Theory Valence Shell Electron Pair Repulsion Theory

Linear A – A A – X X – A – X A2 or AX (diatomic) AX2 (triatomic) 1 or 2 shared pairs NO unshared pairs on central atom Bond angle: 180o

Bent AX2 2 shared pairs SOME unshared pairs on central atom Bond angle: less than 180o

Trigonal Planar AX3 3 shared pairs NO unshared pairs on central atom Bond angle: 120o

Trigonal Pyramidal AX3 3 shared pairs SOME unshared pairs on central atom Bond angle: less than 120o

Tetrahedral AX4 4 shared pairs NO unshared pairs on central atom Bond angle: 109.5o

Trigonal Bipyramidal AX5 5 shared pairs NO unshared pairs on central atom Bond angle: 90o and 120o

Octahedral AX6 6 shared pairs NO unshared pairs on central atom Bond angle: 90o