![]() With this information we can compute the Structure Factor F hkl, assuming the scattering factors of Na and Cl are expressed by f Naand f Cl, respectively. So the positions of the ions are the followings (with Na at the center of axis) : In this structure, each corner ion is shared between eight unit cells, each ion a face of the cell by two cells, each ion on a edge by four cells and the ion inside the cell belongs entirely to that unit cell. The structure of sodium chloride consists of eight ions a unit cell, four are Na + ions and the other four are Cl – ions.We may say that cations and anions are present in equivalent positions and the structure has 6 : 6 coordination. It is obvious from the diagram that each chloride ion is surrounded by six sodium ions which are disposed towards the corners of a regular octahedron.As there is only one octahedral site for every chloride ion, the stoichiometry is 1 : 1.This equivalent to saying that sodium ions occupy all the octahedral sites. Sodium ions are so located that there are six chloride ions around it.Chloride ions are ccptype of arrangement, i.e., it contains chloride ions at the corners and at the center of each face of the cube.The salient features of its structure are: With molar masses of 22.99 and 35.45 g/mol respectively, 100 g of NaCl contain 39.34 g Na and 60.66 g Cl. Sodium chloride, also known as salt or halite, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |