Question:
In a face centered cubic lattice atoms $A$ are at the corner points and atoms $B$ at the face centered points. If atom $B$ is missing from one of the face centered points, the formula of the ionic compound is :
In a face centered cubic lattice atoms $A$ are at the corner points and atoms $B$ at the face centered points. If atom $B$ is missing from one of the face centered points, the formula of the ionic compound is :
Updated On: Jun 26, 2024
- $AB_2$
- $A_5B_2$
- $A_2B_3$
- $A_2B_5$
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The Correct Option is D
Solution and Explanation
$A=8\times\frac{1}{8}=1$
$B=6\times\frac{1}{2}-1\times\frac{1}{2}=\frac{5}{2}$
$A : B$
$1:\frac{5}{2}$
$\Rightarrow 2:5$
$B=6\times\frac{1}{2}-1\times\frac{1}{2}=\frac{5}{2}$
$A : B$
$1:\frac{5}{2}$
$\Rightarrow 2:5$
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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.