Radius Ratio of Crystal: Interstitial vs Large Atom

Click For Summary

Homework Help Overview

The discussion revolves around the radius ratio of atoms in a crystal structure, specifically comparing interstitial atoms and larger atoms. The context is rooted in crystallography and the properties of unit cells within crystals.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the dependency of the radius ratio on the specific type of crystal and the nature of the atoms involved. There is a request for clearer visual representations in educational materials to aid understanding.

Discussion Status

The conversation is ongoing, with participants questioning the clarity of definitions and the need for illustrative examples. Some guidance has been offered regarding the complexity of crystal structures and unit cells, but no consensus has been reached.

Contextual Notes

There is an acknowledgment of the variability in crystal types and the importance of context in understanding the radius ratio. Participants express a desire for more comprehensive educational resources.

asdf1
Messages
734
Reaction score
0
in the radius ratio of a crystal, what is the difference between the radius of the interstitial atom and large atom?
 
Physics news on Phys.org
Don't you think that depends one heckuva lot on exactly what crystal you are talking about and what the atoms are?

Unless you are asking about the difference in meaning and I would think that would be obvious!
 
i guess so, but i saw that in a textbook about crystallography, and I'm not really clear on what's the difference... it'd be nice if that book could show those two things in a picture or diagram...
 
The bulk of a crystal is a repeating pattern,
so a "unit cell" can be centered on any atom.
There are many different types of "unit cells",
some retained for the sake of tradition.

Whenever the book describes structure vectors,
assemble a set of sticks in 3-d to show them.
Especially at first, 2-d drawings might not cut it.
 
ok, thanks!
 

Similar threads

Energy of a crystal in thermal equilibrium
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Time rondeau crystals, experimental observations
  • · Replies 1 ·
Replies
1
Views
4K
Problem on Diffraction Grating and Laser Crystallography
  • · Replies 10 ·
Replies
10
Views
3K
Ratio of atomic masses of two ideal gases
  • · Replies 7 ·
Replies
7
Views
2K
The volume of the nucleus to the volume of the electron
  • · Replies 1 ·
Replies
1
Views
1K
WTA : does atomic mass matter to atom's radius?
  • · Replies 3 ·
Replies
3
Views
2K
Distance between 2 atoms in a crystal
  • · Replies 9 ·
Replies
9
Views
9K
What Does d Represent in Interatomic Spacing Diagrams?
  • · Replies 5 ·
Replies
5
Views
1K
The ratio of the gravitational force between electron and proton
  • · Replies 7 ·
Replies
7
Views
10K
How Does Atom Interaction Influence Motion in a One-Dimensional Crystal Lattice?
  • · Replies 63 ·
3
Replies
63
Views
12K