Complete the exercises below. Identify each of the following elements as a metal, nonmetal, or metalloid: a. gallium, b. molybdenum, c. tellurium, d. arsenic, e. xenon, f. ruthenium.

Name: Chemistry: The Central Science
Author: Brown
ISBN: 9780134414232

검증된 단계별 안내

Step 1: Understand the classification of elements into metals, nonmetals, and metalloids based on their properties. Metals are typically shiny, good conductors of heat and electricity, and malleable. Nonmetals are poor conductors and can be gases, liquids, or brittle solids. Metalloids have properties intermediate between metals and nonmetals.

Step 2: Locate each element on the periodic table to determine its classification. The position of an element on the periodic table can help identify whether it is a metal, nonmetal, or metalloid.

Step 3: Identify gallium (Ga). Gallium is located in group 13 of the periodic table, which is typically associated with metals. It is a metal.

Step 4: Identify molybdenum (Mo). Molybdenum is found in group 6, which is part of the transition metals section. It is a metal.

Step 5: Identify tellurium (Te). Tellurium is located in group 16 and is considered a metalloid due to its intermediate properties between metals and nonmetals.

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Periodic Table Classification

Elements are classified into metals, nonmetals, and metalloids based on their properties and positions in the periodic table. Metals, typically found on the left side, are good conductors of heat and electricity, while nonmetals, located on the right, are poor conductors and often have more varied properties. Metalloids, situated along the zig-zag line, exhibit characteristics of both metals and nonmetals.

Properties of Metals

Metals are generally characterized by their luster, malleability, ductility, and high electrical and thermal conductivity. They tend to lose electrons during chemical reactions, forming positive ions. Common examples include elements like iron, copper, and aluminum, which are widely used in various applications due to their favorable physical properties.

Properties of Nonmetals

Nonmetals are elements that typically lack the characteristics of metals. They are usually poor conductors of heat and electricity, and many are gases at room temperature. Nonmetals can gain electrons in chemical reactions, forming negative ions. Examples include oxygen, nitrogen, and noble gases like xenon, which have distinct roles in chemical processes.