Valence Shell Electron Pair Repulsion

PF5 Phosphorus Pentafluoride

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Sulfur Tetrafluoride

Phosphorus pentafluoride has 5 regions of electron density around the central phosphorus atom (5 bonds, no lone pairs). The resulting shape is a trigonal bipyramidal in which three fluorine atoms occupy equatorial and two occupy axial positions.

The F-P-F angle between equatorial positions is 120°, between the axial and equatorial positions it is 90°.

ClF3 PF5 polyhedron

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Related structures H2O | NH3 | CH4 | PF5 |SF4 |ClF3 | SF6 | XeF4