Radiations and the atom of A mixture of absorbing substances

The interaction of electromagnetic radiations with the atoms is a wave-particle interaction. The interaction is mainly based on the specified absorption and energy is absorbed based on radiations and discrete packages of energy that are quanta and photons. The absorbance of light in the materials depends on the atomic structures and atomic orbital configurations. The occupied orbitals in the atoms are finite and well defined but still, the motion of electrons is not restricted in the energetic orbitals (Skoog, et al., 2007).

The electrons of material absorb energy and come to excited states that are unstable states. The electrons in the excited states come back to the ground state and radiate energy that is emission. Based on atomic structures of the materials the appropriate radiation effect can be demonstrated. The electrons are excited in the outer most shell and through transition process reaches to the higher energy levels and corresponds to the shorter wavelength of the radiation.

Figure 3: Electromagnetic spectrum of light

Reference of A mixture of absorbing substances

Skoog, D. A., Holler, F. J. & Crouch, S. R., 2007. Principles of Instrumental Analysis. In: s.l.:Thomson Brooks/Cole, p. 1039.