The geometry is different and also reactivity. 2F more than on PF3
trigonal bipyramidal PF5
trigonal pyramidal PF3
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PF3 is a trigonal pyramidal molecule with a central phosphorus atom bonded to three fluorine atoms, while PF5 is a trigonal bipyramidal molecule with a central phosphorus atom bonded to five fluorine atoms. The difference in their molecular structures arises from the difference in the number of bonded atoms surrounding the central phosphorus atom.
PF5 :SP3d
In PF3, the central phosphorus atom uses sp3 hybrid orbitals. In PF5, the central phosphorus atom uses sp3d hybrid orbitals.
PF5 is a molecular compound. It consists of covalent bonds between the atoms in the molecule.
PF5 is a molecular compound. It is formed by the sharing of electrons between the phosphorus and fluorine atoms, rather than the transfer of electrons, which occurs in ionic compounds.
The covalent compound PF5 is named phosphorus pentafluoride.