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Question

Which of the following is a property of metalloids?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
Semiconductor

Metalloid Properties Explained

Metalloids are elements that share characteristics with both metals and nonmetals. Understanding their unique properties is key in chemistry.

Analyzing Element Properties

Let's examine the given options to identify a property specific to metalloids:

  • Malleable: This is a typical property of metals, allowing them to be hammered into thin sheets. Metalloids are generally not malleable.
  • Ductile: Similar to malleability, ductility is characteristic of metals, meaning they can be drawn into wires. Metalloids usually lack this property.
  • Sonorous: This property, referring to the ability to produce a ringing sound when struck, is also associated with metals. Metalloids are not sonorous.
  • Semiconductor: This is the defining property of metalloids. They have electrical conductivity between that of a conductor (like metals) and an insulator (like nonmetals). Their conductivity can be manipulated, making them crucial in electronics.

Therefore, being a semiconductor is a key property distinguishing metalloids.

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Important Questions from Classification of Elements and Periodicity in Properties

  1. Which one of the following is the correct order of the valencies of elements Ne, Si, N and Mg?
  2. Which one of the following is the most fundamental characteristic is an element?

  3. March List-I with List-II and select the correct answer using the code given below the Lists:

    List I

    (Element)

    List II

    (Highest Valency)

    A. Sulfur

    1. Five

    B. Phosphorous

    2. Six

    C. Lead

    3. Two

    D. Silver

    4. Four

  4. When one strikes a safety match, the first step is

  5. The elements of the groups 3 to 12 are called _______ elements or transition elements.

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