Question

Three semiconductors are arranged in the ascending order of their energy gap. The correct arrangement is

• A. Tellurium, Germanium, Silicon
• B. Tellurium, Silicon, Germanium
• C. Silicon, Germanium, Tellurium
• D. Silicon, Tellurium, Germanium

Answer 1

The correct option is A Tellurium, Germanium, Silicon

Semiconductors having higher atomic number have lower ionisation energy, implying that the energy gap reduces as the atomic number increases.

So, the correct ascending order is Tellurium, Germanium, Silicon.

Hence, $\left(A\right)$ is the correct answer.