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प्रश्न
Which of the following represents correct order of conductivity in solids?
विकल्प
\[\ce{Κ_{metal} >> K_{insulators} < K_{semiconductors}}\]
\[\ce{Κ_{metal} << K_{insulators} < K_{semiconductors}}\]
\[\ce{Κ_{metal} ≅ K_{insulators} > K_{semiconductors} = zero}\]
\[\ce{Κ_{metal} < K_{insulators} > K_{semiconductors} ≠ zero}\]
उत्तर
\[\ce{Κ_{metal} >> K_{insulators} < K_{semiconductors}}\]
Explanation:
Conductivity of metal, insulator and semiconductors can be represented in the term of k (Kappa) which depends upon energy gap between valence band and conduction band.
Valence and conductance bands in metals, semiconductors and insulators.
| Valued K(Ω–1 m–1) | |
| Metal | 104 to 107 |
| Insulator | 10–20 to 10–10 |
| Semiconductor | 10–6 to 104 |
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संबंधित प्रश्न
In terms of band theory, what is the difference Between a conductor and an insulator
In terms of band theory, what is the difference Between a conductor and a semiconductor
Which of the following statements are true about metals?
(i) Valence band overlaps with conduction band.
(ii) The gap between valence band and conduction band is negligible.
(iii) The gap between valence band and conduction band cannot be determined.
(iv) Valence band may remain partially filled.
Assertion: Graphite is a good conductor of electricity however diamond belongs to the category of insulators.
Reason: Graphite is soft in nature on the other hand diamond is very hard and brittle.
Band theory of metals is based on ______
