Read the passage given below and answer the following question Ionic solids and melts are compounds in which the interactions are dominated by electrostatic effects. However, the polarization of the ions also plays an important role in many respects as has been clarified in recent years years thanks to the development of realistic polarizable interaction potentials. After detailing these models, we illustrate the importance of polarization effects on a series of examples concerning the structural properties, such as the stabilization of particular crystal structures or the formation of highly-coordinated multivalent ions in the melts, as well as the dynamic properties such as the diffusion of ionic species. The effect on the structure of molten salt interfaces (with vacuum and electrified metal) is also described. Although most of the results describes here concern inorganic compounds (mol,yen fluorides and chlorides, ionic oxides.....), the particular case of the room temperature ionic liquids, a special class of molten salts in which at least one species is organic, will also be briefly discussed to indicate how the ideas gained from the study of 'simple' molten salts are being transferred to these more complex systems. Source : https:`////`www.landfonline.com`//`doi`//`abs`//`10.1080`//`00268976.2011.617523 Atoms are arranged at the corners and at the centre of each faces of the unit cell. Which one of the following best describes the statement ?