Chapter 10.4_10.5 as handout - Valence Bond Theory and Shape If we only used the set of atomic orbitals to make bonds then the shapes of molecules would

Chapter 10.4_10.5 as handout - Valence Bond Theory and...

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1 Valence Bond Theory and Shape 10.4How is it possible to make a tetrahedral shape,with its strange angles?Valence Bond Theory and NH3Example: If the bonds form from overlap of 3 2p orbitals onnitrogen with the 1s orbital on each hydrogen atom, whatwould the molecular geometry of NH3be? N – 1s 2 2s 2 2p 3 3 H – 1s 1 Using the 3 2p orbitals predict 90º Actual H-N-H bond angle is 107.3º 10.4 Orbital Hybridization and Shape 10.4 Since electrons are waves, the electrons in orbitals can constructively and destructively interfere with one another. Since orbitals are the region of space that electrons move in, that means orbitals constructively and destructively interfere with one another. Using the wave properties of electrons, we can combine atomic orbitals to form hybrid orbitals.
2 10.4 Formation of sp 3 Hybrid Orbitals this part added up this part cancelled + - + - + + - + - + - + - + - Positive 2p lobes

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