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Chapter 2: Problem 57

a. Classify the following elements as metals or nonmetals: $$\begin{array}{lll}\mathrm{Mg} & \mathrm{Si} & \mathrm{Rn} \\ \mathrm{Ti} & \mathrm{Ge} & \mathrm{Eu} \\ \mathrm{Au} & \mathrm{B} & \mathrm{Am} \\\ \mathrm{Bi} & \mathrm{At} & \mathrm{Br}\end{array}$$ b. The distinction between metals and nonmetals is really not a clear one. Some elements, called metalloids, are intermediate in their properties. Which of these elements would you reclassify as metalloids? What other elements in the periodic table would you expect to be metalloids?

Short Answer

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In summary, the given elements can be classified as follows: Metals: \( \mathrm{Mg}\), \( \mathrm{Ti}\), \( \mathrm{Eu}\), \( \mathrm{Au}\), \( \mathrm{Am}\), and \( \mathrm{Bi}\). Nonmetals: \( \mathrm{Rn}\), \( \mathrm{B}\), \( \mathrm{At}\), and \( \mathrm{Br}\). Metalloids: \( \mathrm{Si}\) and \( \mathrm{Ge}\). Other possible metalloids include: \( \mathrm{B}\), \( \mathrm{As}\), \( \mathrm{Sb}\), \( \mathrm{Te}\), and \( \mathrm{Po}\).

Step by step solution

01

Identify Metals and Nonmetals

To classify the elements as metals and nonmetals, we will reference the periodic table. Metals are typically located on the left side and in the center of the periodic table, while nonmetals are located on the right side. Using this information, we can classify the given elements as follows: Metals: \( \mathrm{Mg} \) - Magnesium \( \mathrm{Ti} \) - Titanium \( \mathrm{Eu} \) - Europium \( \mathrm{Au} \) - Gold \( \mathrm{Am} \) - Americium \( \mathrm{Bi} \) - Bismuth Nonmetals: \( \mathrm{Rn} \) - Radon \( \mathrm{B} \) - Boron \( \mathrm{At} \) - Astatine \( \mathrm{Br} \) - Bromine
02

Identify Metalloids

Metalloids are elements with properties that fall between those of metals and nonmetals. The most commonly recognized metalloids are Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, and Polonium. From the given list, we can classify the following elements as metalloids: \( \mathrm{Si} \) - Silicon \( \mathrm{Ge} \) - Germanium
03

Identify other possible metalloids

As mentioned earlier, the commonly recognized metalloids are: \( \mathrm{B} \) - Boron \( \mathrm{Si} \) - Silicon \( \mathrm{Ge} \) - Germanium \( \mathrm{As} \) - Arsenic \( \mathrm{Sb} \) - Antimony \( \mathrm{Te} \) - Tellurium \( \mathrm{Po} \) - Polonium In conclusion, using the periodic table, we were able to classify the given elements as metals, nonmetals, and metalloids.

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