Identify the three "must-haves" of collision theory. particles collide in the right orientation

enough kinetic energy for reaction to occur

enough particles for reaction to occur

enough space for particles to maneuver

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