discuss shape of
1. sf4
2. pf3
3. clf3
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- The anticipated shape of SF4 molecule is sea-saw shape with Sulfur atom in the center. There are five electron pairs arranged. Its electron geometry is trigonal bi pyramidal with a sp3d hybridization.
- Each of the fluorine atoms can 'pair up' with a phosphorus atom. This gives 3 bonding pairs and 1 lone pair of electrons. The overall shape is trigonal pyramidal. A trigonal pyramidal shape can be imagined to be a tetrahedral shape where one of the bonds has been replaced with a lone pair of electrons.
- These are arranged in a trigonal bipyramidal shape with a 175° F(axial)-Cl-F(axial) bond angle. The two lone pairs take equatorial positions because they demand more space than the bonds. The result is a T-shaped molecule.
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