Читать книгу Solid State Chemistry and its Applications - Anthony R. West - Страница 35

Most metals crystallise in one of the three arrangements, ccp, hcp and bcc, the first two of which are cp structures. The distribution of structure type among the metals is irregular (Table 1.3), and no clear‐cut trends are observed. It is still not well understood why particular metals prefer one structure type to another. Calculations reveal that the lattice energies of hcp and ccp metal structures are comparable and, therefore, the structure observed in a particular case probably depends on fine details of the bonding requirements or band structures of the metal. Structural details of elements not included in Table 1.3 are given in Appendix D.