Good that contain acids often taste sour. foods that contain bases often bitter. Why do you think humans and other primates seek out foods that taste sour?

Ci think not

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