Derivation of the Relationship Between Radius r of the Tetrahedral Void and the Radius R of the Atoms in the Close Packing
Derivation of the Relationship Between Radius r of the Tetrahedral Void and the Radius R of the Atoms in the Close Packing. A tetrahedral void may be represented in a cube as shown in the below figure. fig 2.12 - Tetrahedral..
Derivation of the Relationship Between Radius r of the Tetrahedral Void and the Radius R of the Atoms in the Close Packing. A tetrahedral void may be represented in a cube as shown in the below figure. fig 2.12 - Tetrahedral..Tetrahedral Void and Close Packed Atoms Derivation of the Relationship Between Radius r of the Tetrahedral Void and the Radius R of the Atoms in the Close Packing - Derivation of the Relationship Between Radius r of the Tetrahedral Void and the Radius R of th..
Derivation of the Relationship Between Radius r of the Tetrahedral Void and the Radius R of the Atoms in the Close Packing - Derivation of the Relationship Between Radius r of the Tetrahedral Void and the Radius R of th..Types of Voids Tetrahedral Voids - A simple triangular void in a crystal is surrounded by four spheres. fig 2.11 - A unit cell of simple cubic packing fig 2.11 - (a) Tetrahedral void..
Tetrahedral Voids - A simple triangular void in a crystal is surrounded by four spheres. fig 2.11 - A unit cell of simple cubic packing fig 2.11 - (a) Tetrahedral void..Octahedral Void and Closed Packed Atoms
Derivation of the Relationship Between Radius r of the Octahedral Void and the Radius R of the Atoms in the Close Packing. - Derivation of the Relationship Between Radius r of the Octahedral Void and the Radius R of the Atoms in the Close ..
Derivation of the Relationship Between Radius r of the Octahedral Void and the Radius R of the Atoms in the Close Packing. - Derivation of the Relationship Between Radius r of the Octahedral Void and the Radius R of the Atoms in the Close ..Derivation of the Relationship Between Radius r of the Octahedral Void and the Radius R of the Atoms in the Close Packing
A sphere fitting into the octahedral void is shown by shaded circle. A sphere above and a sphere below this small (shaded) sphere have not been shown in the figur..
Radius Ratio Rules
Radius Ratio Rules - For the stability of an ionic compound, each cation should be surrounded by maximum number of anions and vice versa. The number of oppositely charged ions surrounding each ion is called its co-ordination number. The larger is the size of the cation the greater is its ..
Radius Ratio Rules - For the stability of an ionic compound, each cation should be surrounded by maximum number of anions and vice versa. The number of oppositely charged ions surrounding each ion is called its co-ordination number. The larger is the size of the cation the greater is its ..Points to Remember
Number of octahedral voids = Number of atoms present in the close packed arrangement Number of tetrahedral voids = 2 x Number of octahedral voids = 2 x Number of ato..
Suggested solution:
B atoms form CCP structure Number of octahedral voids = Number of B atoms Number of tetrahedral voids = 2 x Number of B atoms. Since the number of A atoms = 2 x Number of B atoms therefore they occupy all of tetrahedral voids. Coordination number o..
Main features
Each Ca 2 + ion is present at the corners and the face centers (F.C.C. or C.C.P.). F - ions are present in all the tetrahedral voids. Each Ca 2 + is surrounded by 8F - where as each F - is surrounded by 4Ca 2 + so it has 8:4 co-ordination. Number of Ca 2 + ..
Ferrites
They are compounds having the general formula AFe 2 O 4 where A is a divalent cation like Mg 2 + or Zn 2 + . They are obtained from Fe 3 O 4 by replacing Fe 2 + by divalent cations. These belong to a category with a general formula AB 2 O 4 where A is a divalent cation and B is a trivalent..
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