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Ch.12 - Solids and Modern Materials

Chapter 12, Problem 113b

Silicon carbide, SiC, has the three-dimensional structure shown in the figure.

(b) Would you expect the bonding in SiC to be predominantly ionic, metallic, or covalent?

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Hi everyone. This problem reads. Consider the three D structure of the potassium bromide lattice below identify the expected predominant bonding present in the compound as either ionic metallic or covalin. Okay, so let's go ahead and discuss these and then we'll decide which one is present. Okay, so for an ionic solid, this is composed of a metal plus nonmetal. Okay, as ions for a metallic Solid, this one is composed of metal and another metal. So we have metal plus metal or just a metal by itself. Okay, and lastly a Covalin solid, this one is going to be a network solid where atoms are bonded by covalin bonds in a single continuous network. Okay, so we have bonded by Covalin bonds and so let's go ahead and identify what we have here. So we know we have potassium. Okay, potassium is a main group metal and we also have bromide, bromide is a nonmetal. So with that information we see we have a main group metal and a nonmetal. So this is most likely a ionic solid. Okay, so this is going to be our final answer for this problem. I hope this was helpful