Valence Bond Theory

Valence Bond Theory - Trigonal Bipyramidal electronic...

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Valence Bond Theory (Hybridization) Trigonal Bipyramidal electronic arrangement: AB 5 , AB 4 U, AB 3 U 2 , and AB 2 U 3 If lone pairs are incorporated into the trigonal bipyramidal structure, there are three possible new shapes. 1. One lone pair - Seesaw shape 2. Two lone pairs - T-shape 3. Three lone pairs – linear The lone pairs occupy equatorial positions because they are 120 o from two bonding pairs and 90 o from the other two bonding pairs. Results in decreased repulsions compared to lone pair in axial position.
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Unformatted text preview: Trigonal Bipyramidal electronic arrangement: AB 5 , AB 4 U, AB 3 U 2 , and AB 2 U 3 AB 4 U molecules have: 1.1. trigonal bipyramid electronic arrangement 1.2. seesaw shaped shape 1.3. and are polar One example of an AB 4 U molecule is SF 4 Hybridization of S atom is sp 3 d. Trigonal Bipyramidal electronic arrangement: AB 5 , AB 4 U, AB 3 U 2 , and AB 2 U 3 shape Trigonal Bipyramidal electronic arrangement: AB 5 , AB 4 U, AB 3 U 2 , and AB 2 U 3 AB 3 U 2 molecules have:...
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