Identify the group 3A element that best fits each of the following descriptions.
(c) Is a semiconductor

Verified step by step guidance

1. Identify the elements in group 3A (13) of the periodic table. These elements are Boron (B), Aluminum (Al), Gallium (Ga), Indium (In), and Thallium (Tl).
2. Understand the properties of semiconductors. Semiconductors have electrical conductivity between that of a conductor and an insulator. They are often used in electronic devices.
3. Recall that semiconductors are typically metalloids or elements with similar properties.
4. Among the group 3A elements, identify which one is a metalloid. Boron (B) is the only metalloid in this group.
5. Conclude that Boron (B) is the group 3A element that is a semiconductor.

Key Concepts

Group 3A Elements

Group 3A elements, also known as Group 13 in the periodic table, include boron, aluminum, gallium, indium, and thallium. These elements have three valence electrons and exhibit a range of properties, from metals to metalloids. Understanding their position in the periodic table helps in predicting their chemical behavior and applications.

Semiconductors

Semiconductors are materials that have electrical conductivity between that of conductors and insulators. They can conduct electricity under certain conditions, making them essential in electronic devices. Common semiconductor materials include silicon and germanium, which can be doped with other elements to enhance their conductive properties.

Doping in Semiconductors

Doping is the process of adding impurities to a semiconductor to change its electrical properties. By introducing elements with different valence electrons, such as phosphorus or boron, the conductivity of the semiconductor can be increased. This process is crucial for creating p-type and n-type semiconductors, which are fundamental in electronic components like diodes and transistors.