Question

Metalloid among the following is -

• A. lithium
• B. sulphur
• C. sodium
• D. silicon

Answer 1

The correct option is D

silicon

Metalloids are the elements whose property is intermediate between metal and non-metal.

Explanation for correct option:

(D) Silicon($\mathrm{Si}$) is a metalloid. Silicon($\mathrm{Si}$) exists in the solid state at room temperature and pressure. It also has a metallic lustre. These are properties similar to a metal. On the other hand, Silicon($\mathrm{Si}$) is also brittle and also it is a semiconductor, these are the properties of a non-metal. So, Silicon($\mathrm{Si}$) has both the properties of a metal and non-metal.

Explanation for incorrect options:

(A) Lithium($\mathrm{Li}$) is a metal.

(B) Sulphur($\mathrm{S}$) is a non-metal.

(C) Sodium($\mathrm{Na}$) is a metal.

Therefore, the correct option is (D).