Phosphine is a colorless toxic gas. It is a hydride of phosphorus. The chemical formula of this compound is PHs. On the other hand, Silane is also a colorless, pyrophoric toxic gas with a sharp, repulsive smell, it is also a hydride of silicone. The chemical formula of this compound is Siha According to the VSEPR model, provide comments, on the arrangement of electron pairs around PHz and SiH, Select one in each case, the numbers of electron pairs around the central atom are same, therefore same electron pairs arrangement around the central atom Ob. Since both phosphorus and silicone are in the second period, and making hydride, therefore same electron pairs arrangement around the central atom . In each case there are a different number of electron pairs around the central atom, therefore different electron pairs arrangement around the central atom O d. Electron pairs arrangement around the central atom (different or the same), depending on the conditions leading to maximum repulsion and we don't have that information therefore can not comments. O e. In each case there are a different number of atoms around the central atom, therefore different electron paits arrangement around the central atom