Can any one explain the absorption/transmission/reflection of electromagnetic waves in the wave form? It is generally said that the atom absorbs/reflects/transmits photon. But can this phenomena be explained in the wave form of EMR?
But can this phenomena be explained in the wave form of EMR?
Yes, these phenomena are usually described and explained using continuous EM field both in macroscopic and microscopic theory. The simplest thing of this kind is perhaps calculation of index of refraction and absorption coefficient based on calculation of expected average electric moment of atoms/molecules in EM field from the Schroedinger equation. If the field oscillates, so does average electric moment and the derived polarization. This is part of the theory of optical spectra of molecules.