What is the radius ratio r^+/r^- for NaCl? | vedclass

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Question

(D) The crystal structure of $NaCl$ is a face-centered cubic $(fcc)$ lattice where $Na^+$ ions occupy octahedral voids and $Cl^-$ ions form the lattic

Vedclass · Accepted Answer

$0.52$

Vedclass · Answer

(D) The crystal structure of $NaCl$ is a face-centered cubic $(fcc)$ lattice where $Na^+$ ions occupy octahedral voids and $Cl^-$ ions form the lattice.For an octahedral void,the limiting radius ratio $r^+/r^-$ is $0.414$.In the $NaCl$ crystal,the actual radius ratio is approximately $0.52$,which falls within the range of $0.414$ to $0.732$ for octahedral coordination.

What is the radius ratio $r^+/r^-$ for $NaCl$?

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