Which two statements describe a claim that is based on science A it's based on personal bias
B it's based on empirical evidence
C it's based on a long tradition
D its based on logical reasoning

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