Question

Which of the following elements is considered as a metalloid?

• A. Sc
• B. Pb
• C. Bi
• D. Te

Answer 1

The Correct Option is D

To determine which element is considered a metalloid, let's review the characteristics and general placement of metalloids in the periodic table.

Metalloids are elements that have properties intermediate between metals and nonmetals. They are typically found in a diagonal section on the Periodic Table, extending from Boron (B) to Polonium (Po). The most commonly recognized metalloids include Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), and possibly several others depending on varying definitions.

Now, let's examine each of the given options:

1. Scandium (Sc): Located in group 3 of the periodic table, Scandium is classified as a transition metal.
2. Lead (Pb): Found in group 14, Lead is a post-transition metal, not a metalloid.
3. Bismuth (Bi): A heavy post-transition metal, Bismuth is not classified as a metalloid.
4. Tellurium (Te): Tellurium is a classic example of a metalloid. It is located in group 16 and exhibits properties intermediary between metals and nonmetals.

Conclusion: Based on the definitions and characteristics of metalloids, the correct option is:

Tellurium (Te)