White light is made up of
a.
only the types of visible light with very long wavelengths.
b.
ultraviolet light and gamma rays.
c.
a spectrum of many different colors of light.
d.
infrared light and radio waves.

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