atomic bonding in ceramics bonding can be ionic and or covalent in character ionic character increases with difference in electronegativity of atoms degree of ionic character may be large or ...
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...Atomic bonding in ceramics can be ionic and or covalent character increases with difference electronegativity of atoms degree may large small caf sic adapted from fig callister rethwisch e is linus pauling the nature chemical bond rd edition copyright by cornell university chapter ceramic crystal structures oxide oxygen anions larger than metal cations close packed a lattice usually fcc fit into interstitial sites among ions factors that determine structure relative sizes formation stable maximize oppositely charged ion neighbors charge c g unstable maintenance neutrality f ca net cation should zero reflected formula x m p values to achieve coordination radii rcation r unit cell anion form how many atom ratio surround around coord zns ranion locations zinc blende linear triangular nacl sodium tetrahedral chloride octahedral cscl cesium cubic table computation minimum radius for an site n...