The heating curve shows the energy galn of a substance as it changes from solid to gas. Which section of the graph shows the liquid phase of the substance gaining kinetic energy?
Α. Α
B. B
C. C
D. D
E. E

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   

The total number of nucleons

Idon’t know what the answer is i wish i could