Question

Compare and contrast the compounds CH4 and PH3 in terms of covalent bonding, molecular geometry (shape), and intermolecular forces. Which substance would experience a stronger attraction between its molecules, and why?

Answer 1

CH4 and PH3 are both covalent since they are composed both of non-metals.  

CH4 is non- polar because of  London forces and has a geometry of tetrahedral  PH3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (IMF) . Since PH3 is polar, it has a stronger IMF