1.

If the radius of ` Mg^(2+)` ions, ` Cs^(+) " ions" , S^(2-)` ions and ` Cl^(-)` are 0.65 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.

Answer» Correct Answer - 6, octahedral


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