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VSPR. Molecule Shapes. What is VSPR? . Valence Shell Electron Repulsion The idea states that covalent bonds & lone electron pairs like to stay apart because they have the same charge Explains why molecules have their shapes. Hybridization. S & p orbitals mix to form a hybrid orbital
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VSPR Molecule Shapes
What is VSPR? • Valence Shell Electron Repulsion • The idea states that covalent bonds & lone electron pairs like to stay apart because they have the same charge • Explains why molecules have their shapes
Hybridization • S & p orbitals mix to form a hybrid orbital • This mix creates different angles which changes the shapes of the molecules based on the number of atoms & valence electrons
Shapes • Linear – the atoms form a straight line
Shapes • Linear – the atoms form a straight line • Bent – the molecule looks bent
Shapes • Linear – the atoms form a straight line • Bent – the molecule looks bent • Trigonal Planar – looks like a peace sign
Shapes • Linear – the atoms form a straight line • Bent – the molecule looks bent • Trigonal Planar – looks like a peace sign • Trigonal Pyramidal - a squished pyramid
Shapes • Linear – the atoms form a straight line • Bent – the molecule looks bent • Trigonal Planar – looks like a peace sign • Trigonal Pyramidal - a squished pyramid • Tetrahedral – a 4 faced pyramid
Finding the Shape • See the flow chart handout • How many “things” are attached to the central atom? • Double bonds still count as one “thing” • Lone pairs count the same as an attached atom