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If the radius of Mg2+ ion, Cs^(+) ion, O^(2–) ion, S2^(–) ion and Cl^(–) ion are 0.65 Å, 1.69 Å, 1.40 Å, 1.84 Å, and 1.81 Å respectively. Calculate the co-ordination numbers of the cations in the crystals of MgS, MgO and CsCl. |
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