Express the following number in scientific notation. 0.01520 = 1.520 x 10-2 1.52 x 10-2 0.1520 x 10-1 1.520 x 10-3

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