1. Ionic and Molecular Solids (Sections)CuI, CsI, and NaI

Chapter , Problem 59E

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Ionic and Molecular Solids

CuI, CsI, and NaI each adopt a different type of structure. The three different structures are those shown in Figure 12.26. (a) Use ionic radii, \(\mathrm{Cs}^{+}(r=1.81\ \AA)\), \(\mathrm{Na}^{+}(r=1.16\ \AA)\), \(\mathrm {Cu}^{+}(r=0.74\ \AA)\), and, \(\mathrm {I}^{-}(r=2.06\ \AA)\), to predict which compound will crystallize with which structure. (b) What is the coordination number of iodide in each of these structures?

Equation Transcription:

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Text Transcription:

Cs^{+}(r=1.81{AA})

Na^{+}(r=1.16{AA})

Cu^{+}(r=0.74{AA})

I^{-}(r=2.06{AA})