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If the radius of Br^- ion is 0.182 nm, h...

If the radius of `Br^-` ion is 0.182 nm, how large a cation can fit in each of tetrahedral hole ?

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For a tetrahedral void `(r^(+))/(r^(-))=0.225`
`therefore r^(+)=0.225 xx r^(-)`
`therefore r^(+)=0.225xx0.182=4.095xx10^(-2)nm`
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