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In a close packed structure, the atoms s...

In a close packed structure, the atoms stack together occupying maximum space and leaving minimum vacant space. The close packing arrangment may be hcp (ABABA….) or ccp (ABCABCA….). In these arrangments, there is one octahedral void and two tetrahedral voids. Depending upon the ratio of size of cation and anion, the ions of one type occupy the voids of other ions. This results in different types of crystalline structures.
If edge length of a fcc unit cell of a metallic element is q, then the radius of an atom is ............. .

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To find the radius of an atom in a face-centered cubic (FCC) unit cell given the edge length \( q \), we can follow these steps: ### Step-by-Step Solution: 1. **Understand the FCC Structure**: In a face-centered cubic (FCC) structure, there are atoms located at each of the eight corners of the cube and one atom at the center of each of the six faces. 2. **Identify the Atoms in the FCC Unit Cell**: ...
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