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Chapter 12: Problem 32

For each of these solids, state whether you would expect it to possess metallic properties: (a) TiCl_ \(_{4},(\mathbf{b})\) NiCo alloy, \((\mathbf{c}) \mathrm{W}\) \((\mathbf{d}) \mathrm{Ge},(\mathbf{e}) \mathrm{ScN}\)

Short Answer

Expert verified
In summary, out of the given solids, NiCo alloy \((b)\) and tungsten (W) \((c)\) are expected to possess metallic properties. However, TiCl_4 \((a)\), Germanium (Ge) \((d)\), and Scandium nitride (ScN) \((e)\) do not fully possess metallic properties.

Step by step solution

01

a) TiCl_4

Titanium tetrachloride is a compound formed between a transition metal (Ti) and a non-metal (Cl). This compound is more likely to exhibit ionic or covalent characteristics than metallic properties due to the nature of the bond between the metal and non-metal. As a result, we do not expect TiCl_4 to possess metallic properties.
02

b) NiCo alloy

NiCo is an alloy containing two transition metals - nickel (Ni) and cobalt (Co). Alloys of metals generally have metallic properties since they contain a mix of metallic elements that share a metallic bond. Therefore, we expect the NiCo alloy to possess metallic properties.
03

c) W

Tungsten (W) is a transition metal known for its high strength and good electrical conductivity. As a metal, it inherently has metallic properties. Thus, we expect tungsten to possess metallic properties.
04

d) Ge

Germanium (Ge) is a metalloid, which means that it has properties of both metals and non-metals. While it does exhibit some metallic properties like having a shiny appearance and being a good conductor of electricity, it is not considered a full-fledged metal. Since the question asks for solids that possess metallic properties, we can conclude that Germanium does not fully possess metallic properties.
05

e) ScN

Scandium nitride (ScN) is a compound formed between a transition metal (Sc) and a non-metal (N). Similar to TiCl_4, this compound is more likely to exhibit ionic or covalent characteristics rather than metallic properties due to the nature of the bond between the metal and non-metal. Therefore, we do not expect ScN to possess metallic properties. In summary, out of the given solids, NiCo alloy and tungsten (W) are expected to possess metallic properties, while the other three solids (TiCl_4, Ge, and ScN) do not fully possess metallic properties.

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