Question:
An element crystallises in a b.c.c. lattice. Nearest and next nearest neighbours are respectively
An element crystallises in a b.c.c. lattice. Nearest and next nearest neighbours are respectively
Updated On: May 2, 2023
- 8,8
- 8,6
- 6,8
- 6,6
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The Correct Option is B
Solution and Explanation
In a $b.c.c.$ structure $C.N.$ (Every atoms touches $8$ other atoms, $4$ in a layer below it and $4$ In a layer above it)
However, there are $6$ other atoms (in six adjacent cubic sites) which are only slightly away from it. Thus, these $6$ atoms are the next nearest neighbours.
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Concepts Used:
Solid State
Solids are substances that are featured by a definite shape, volume, and high density. In the solid-state, the composed particles are arranged in several manners. Solid-state, in simple terms, means "no moving parts." Thus solid-state electronic devices are the ones inclusive of solid components that don’t change their position. Solid is a state of matter where the composed particles are arranged close to each other. The composed particles can be either atoms, molecules, or ions.
Types of Solids:
Based on the nature of the order that is present in the arrangement of their constituent particles solids can be divided into two types;
- Amorphous solids behave the same as super cool liquids due to the arrangement of constituent particles in short-range order. They are isotropic and have a broad melting point (range is about greater than 5°C).
- Crystalline solids have a fixed shape and the constituent particles are arranged in a long-range order.