Question

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Q.Sn, C, and Si, Ge are all group XIV elements. Yet, Sn is a conductor, C is an insulator while Si and Ge are semiconductors. Why?​

Answer 1

Answer:

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The conduction level of any element depends on the energy gap between its conduction band and valence band.

Explanation:

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Answer 2

Question

Sn, C, and Si, Ge are all group XIV elements. Yet, Sn is a conductor, C is an insulator while Si and Ge are semiconductors. Why?

Answer

Although all the above-given elements belong to the Group 14 of the periodic table, a few elements are conductors, a few as semiconductors, and a few as insulators.

Explanation

The energy gap in between the valence band and the conduction band of an element determines its conduction level.

The energy gap is zero in the conductors because there is no energy gap in between the valence band and the conduction band. The energy gap for Sn is 0 eV. So, it acts as a conductor.

Similarly, the energy gap for semi-conductors is moderate and it is large for the insulators.

Si and Ge have an energy gap of 1.1 eV and 0.7 eV respectively, so they act as semiconductors.

C has an energy gap of 5.4 eV so it acts as an insulator.

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