Determine Z* for a 3p electron in P (r = 106 pm), S (r= 102 pm), and a (r= 99 pm). Are the calculated values of Z*
consistent with the relative sizes of the atoms in both
direction and magnitude?​

; lc

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