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Questions and Answers
What does the term 'coordination number' refer to in the context of crystalline solids?
What does the term 'coordination number' refer to in the context of crystalline solids?
- The total mass of the individual particles in a crystal
- The ratio of the volume of a sphere to the volume of a cube
- The total number of surfaces on a crystal
- The number of neighbouring spheres that touch any given sphere (correct)
How does an increase in coordination number affect the arrangement of spheres in a crystalline solid?
How does an increase in coordination number affect the arrangement of spheres in a crystalline solid?
- It decreases the distance between spheres (correct)
- It increases the volume occupied by the spheres
- It reduces the overall density of the crystal
- It enhances the shape variety of the crystals
Why are individual particles in a crystalline solid treated as hard spheres?
Why are individual particles in a crystalline solid treated as hard spheres?
- To demonstrate flexibility in their arrangement
- To simplify calculations of crystal lattice structures (correct)
- To emphasize their geometric shape
- To represent their electrical properties accurately
What is the primary reason for the close packing of particles in a crystal?
What is the primary reason for the close packing of particles in a crystal?
In a close-packed structure, what does a higher coordination number indicate about the spheres?
In a close-packed structure, what does a higher coordination number indicate about the spheres?
Study Notes
Crystalline Solids
- Constituent particles are closely packed, enhancing stability and structural integrity.
- Individual particles are modeled as hard spheres to simplify analysis of their arrangement.
- Close packing of particles maximizes interparticle attractions, leading to lower energy states and increased density.
Coordination Number
- Defined as the number of neighboring spheres that touch a given sphere.
- Represents the level of compactness in close-packed structures—larger numbers indicate tighter packing.
- Coordination number is crucial for understanding the geometric arrangement and physical properties of different crystalline solids.
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Description
Explore the structure of crystalline solids in this quiz. Understand how constituent particles are packed and learn about the significance of coordination numbers in measuring compactness. Test your knowledge on the interaction of individual particles treated as hard spheres.
