Which scientist is given credit for the plum pudding model of the atom

Ernest rutherford created the plum pudding model. he thought that the electrons were scattered throughout the atom.

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