Which unique property of metalloids makes them especially useful in the electronics industry?

• A. They are excellent insulators, preventing the flow of electricity.
• B. They have intermediate electrical conductivity, allowing them to act as semiconductors.
• C. They are highly malleable and ductile like metals.
• D. They react vigorously with water to produce hydrogen gas.

Answer: (B)

Verified step by step guidance

1. Understand the definition of metalloids: elements that have properties intermediate between metals and nonmetals.
2. Recall the electrical properties of metalloids, which are neither as conductive as metals nor as insulating as nonmetals.
3. Recognize that this intermediate electrical conductivity allows metalloids to function as semiconductors.
4. Connect the concept of semiconductors to their practical use in the electronics industry, where controlled conductivity is essential.
5. Conclude that the unique property making metalloids especially useful in electronics is their ability to act as semiconductors due to intermediate electrical conductivity.