Question

(3) Which one of the following pair of elements is not used to make a binary semiconductor? (   )

(A) Silicon and Boron

(B) Indium and Phosphorous

(C) Cadmium and Tellurium

(D) Arsenic and Gallium

Answer 1

Correct answer is (A) Silicon and Boron

Binary semiconductors generally come in the category of compound semiconductors. They are very useful in filling the technological gap where the elemental semiconductors such as silicon and germenium usually don't work. Binary semiconductors largely consists of a group III element in periodic table (i.e. Ga, In, Al) and a group V element (i.e. As, P, Sb). Out of the given options, only Silicon and Boron is not used to make a binary semiconductors. All the other elements form binary semiconductors suited for different uses in the industry.