An ammonium halide, NH4X, has the CsCl structure at room temperature, a = 4.059 Å. (a)...

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An ammonium halide, NH4X, has the CsCl structure at room temperature, a = 4.059 Å. (a)...

An ammonium halide, NH₄X, has the CsCl structure at room temperature, a = 4.059 Å.

(a) What are the fractional coordinates of N and X in the CsCl structure? Assume a spherical shape for NH₄⁺ .

(b) The density of the room temperature polymorph is 2.431 g cm^-3 . Identify X.

(c) Assuming an effective form factor, f_A, for the spherical NH₄⁺ cation, derive a simplified structure factor master equation for this substance.

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