Hybridization of Phosphorus in P4: It exists as molecules made up of four atoms in a tetrahedral structure. The tetrahedral arrangement results in ring strain and instability. The molecule is described as consisting of six single P–P bonds with P being in Group V on the periodic table, one would expect that it would only be capable of making three bonds to fill its valence shell. In P4, phosphorus does make three bonds, but the molecular geometry cannot be explained by three bonds made from partially-filled p orbitals. Due to larger atomic size P is unable to form pi bonds and so it is tetra-atomic in which each P atom is linked with 3 other P atoms by 3 sigma bonds.