Which of the following is correctly ordered according to the ascending order of band gapenergy?A. Silicon, Copper, Diamond B. Copper, Silicon, DiamondC. Silicon, Diamond, Graphite D. Diamond, Copper, Silicon
Question
Which of the following is correctly ordered according to the ascending order of band gapenergy?A. Silicon, Copper, Diamond B. Copper, Silicon, DiamondC. Silicon, Diamond, Graphite D. Diamond, Copper, Silicon
Solution
The correct order according to the ascending order of band gap energy is B. Copper, Silicon, Diamond.
Here's why:
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Copper is a metal and metals have zero band gap energy.
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Silicon is a semiconductor and has a moderate band gap energy.
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Diamond is an insulator and has a high band gap energy.
So, the ascending order of band gap energy is Copper (0 eV) < Silicon (~1.1 eV) < Diamond (~5.5 eV).
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