Why do NaCl (Sodium Chloride) and MnS (Manganese Sulfide) have similar crystal structures? Chemically similar alkali metal chlorides NaCl and CsCl have different structures, but the chemically different NaCl %26amp; MnS have similiar crystal structures. Why is this?|||Because the ratio of "cation" to "anion" is 1:1 and the sizes of the "ions" are somewhat similar.
Cs and Cl are substantially different in size (Cs is much larger) and are packed differently than Na and Cl.|||because of their sizes in crystal lattices and energy
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