Question

Silicon is a/an

• A. Non-metal
• B. Metal
• C. Alloy
• D. Metalloid

Hint:

The main metalloids to remember are Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), and Tellurium (Te). Silicon and Germanium are famous for their use in semiconductors.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Elements in the periodic table are broadly classified into metals, non-metals, and metalloids based on their properties.

Step 2: Detailed Explanation:
\[\begin{array}{rl} \bullet & \text{Metals: Are typically shiny, malleable, ductile, and good conductors of heat and electricity (e.g., Iron, Copper). } \\ \bullet & \text{Non-metals: Are typically dull, brittle, and poor conductors (insulators) (e.g., Oxygen, Sulphur). } \\ \bullet & \text{Alloy: Is a mixture of metals or a metal and another element. It is not a pure element itself. } \\ \bullet & \text{Metalloids (or semi-metals): These are elements that have properties intermediate between those of metals and non-metals. They are located along the zig-zag line separating metals and non-metals in the periodic table. Silicon (Si) is a classic example. It is a semiconductor of electricity (a property between a conductor and an insulator), and it is brittle but has a metallic luster. } \\ \end{array}\]

Step 3: Final Answer:
Silicon is a metalloid.