If you were to go into your kitchen and chop up lettuce, onions, red peppers and carrots for a salad what combinations would you be making? a. chemical compound
b. molecular elements
c. homogeneous mixture
d. hetergeneous mixture

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   

Ithink that the answer is b

H tricky one let me think and get back to u