Page 308 - Instant notes
P. 308
Physical chemistry 294
The energy depends upon the charges on the ions (larger charges giving higher energy), a
scaling distance, d, and the Madelung constant, A. The Madelung constant depends only
upon the symmetry of the ions in the structure, and hence on the structure type. Thus
A=1.763 for all cesium chloride lattices and A =2.519 for all fluorite lattices. The scaling
distance d varies in proportion to the size of the unit cell.
