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Calculate the critical radius ratio of an ionic crystal in ligancy 4 configuration.
1 Answer
written 3.9 years ago by |
Ligancy:
Fig. 1 Determination of the size of the tetrahedral void
∴AOAJ=AGAE
AO=ra+rcAJ=raAE=√2aAG=√3a
∴ AOAJ=AGAE=ra+rcra=√3a√2a
∴ 1+rcra=√3√2
∴ rcra=√3−√2√2=0.225