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Three semiconductors are arranged in the increasing order of their energy gap as follows. The correct arrangement is –
  • a)
    Tellurium, Germanium, Silicon
  • b)
    Tellurium, Silicon, Germanium
  • c)
    Silicon, Germanium, Tellurium
  • d)
    Silicon, Tellurium, Germanium
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Three semiconductors are arranged in the increasing order of their ene...
Answer:

To determine the correct arrangement of semiconductors based on their energy gap, we need to understand the concept of energy gap and its relationship to the conductivity of a material.

Energy Gap:
The energy gap, also known as the band gap, is the difference in energy between the valence band (the highest occupied energy level) and the conduction band (the lowest unoccupied energy level) in a solid material. It determines the electrical conductivity of a material.

Semiconductors:
Semiconductors are materials that have an energy gap between that of conductors (which have very small or no energy gap) and insulators (which have a large energy gap). The energy gap of a semiconductor determines its conductive properties.

Arrangement of Semiconductors:
Now, let's consider the given arrangement of semiconductors and analyze their energy gaps:

1. Tellurium: Tellurium is a semiconductor with a relatively small energy gap. It is classified as a "narrow-bandgap" semiconductor. Narrow-bandgap semiconductors have a smaller energy gap, allowing for easier electron excitation and higher conductivity.

2. Germanium: Germanium is also a semiconductor, but it has a larger energy gap compared to tellurium. It is classified as a "mid-bandgap" semiconductor. Mid-bandgap semiconductors have a moderate energy gap, which means they have moderate conductivity.

3. Silicon: Silicon is another semiconductor with a larger energy gap compared to both tellurium and germanium. It is classified as a "wide-bandgap" semiconductor. Wide-bandgap semiconductors have a larger energy gap, making it more difficult for electrons to be excited and increasing their resistivity.

Conclusion:
Based on the analysis of the energy gaps, the correct arrangement of semiconductors in increasing order of their energy gap is:

a) Tellurium, Germanium, Silicon

This arrangement is correct because tellurium has the smallest energy gap, followed by germanium with a larger energy gap, and silicon with the largest energy gap among the three semiconductors.
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Three semiconductors are arranged in the increasing order of their energy gap as follows. The correct arrangement is a)Tellurium, Germanium, Siliconb)Tellurium, Silicon, Germaniumc)Silicon, Germanium, Telluriumd)Silicon, Tellurium, GermaniumCorrect answer is option 'A'. Can you explain this answer?
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