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Structure of crystals

by Ezio3.1415
Tags: crystals, structure
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Feb13-13, 11:42 AM
P: 159
What would be the structure of the crystal if rc/ra=1? hexagonal closed packed or anything else?

What would be the structure of the crystal if rc/ra< .23 ?

What would be the structure of the crystal if rc/ra>1 ?
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Feb13-13, 11:45 AM
P: 159
PS: rc=radius of cation
ra=radius of anion

And I am not talking about crystal lattice... That is cubic here I think...
I am talking about co ordination of the crystal molecules,atoms,ions...
Feb19-13, 11:17 AM
P: 159
no one seems interested?

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