Which groups on the periodic table contain metalloids?
A. Groups 1-2
B. Groups 3-12
C. Groups 13-16
D. Groups 17-18
Answer (1)
Metalloids are elements with properties of both metals and nonmetals.
Groups 1-2 and 3-12 contain mostly metals.
Groups 17-18 contain nonmetals.
Groups 13-16 contain a mix of metals, nonmetals, and metalloids.
Therefore, the correct answer is Groups 13-16. G ro u p s 13 − 16
Explanation
Identifying Metalloids We need to identify which groups on the periodic table contain metalloids. Metalloids are elements that have properties of both metals and nonmetals. They are located along the staircase line that separates metals from nonmetals in the p-block of the periodic table.
Analyzing the Options Let's examine the given options:
Groups 1-2: These groups contain alkali and alkaline earth metals, which are metals.
Groups 3-12: These groups contain transition metals, which are also metals.
Groups 13-16: These groups contain a mix of metals, nonmetals, and metalloids. The metalloids are primarily found in this region.
Groups 17-18: These groups contain halogens and noble gases, which are nonmetals.
Determining the Correct Group Based on the above analysis, the groups that contain metalloids are Groups 13-16.
Examples
Understanding the properties and locations of metalloids on the periodic table is crucial in materials science and engineering. For example, silicon, a metalloid, is a key component in semiconductors used in electronic devices. Knowing which groups contain metalloids helps scientists and engineers select appropriate materials for various applications based on their desired properties.
