If the radius ofMg^(2+) ions,Cs^(+) " ions" , S^(2-)ions andCl^(-)are0.65 Å, 1. 69 Å , 1.84 Å and 1.81 Å respectively , calculate the coordination number of the cation in the crystals of MgS, MgO and CsCl.

If the radius ofMg^(2+) ions,Cs^(+) " ions" , S^(2-)ions andCl^(-)are0

1.	If the radius ofMg^(2+) ions,Cs^(+) " ions" , S^(2-)ions andCl^(-)are0.65 Å, 1. 69 Å , 1.84 Å and 1.81 Å respectively , calculate the coordination number of the cation in the crystals of MgS, MgO and CsCl.
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