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The valence band and conduction band of ...

The valence band and conduction band of a solid overlap at low temperature, the solid may be

A

A metal

B

A semiconductor

C

An insulator

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
In conductors valence band and conduction band overlaps.
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Knowledge Check

  • The valence band and the conduction band of a substance overlap at ordinary temperatures The substance may be

    A
    a p-type semiconductor
    B
    a conductor
    C
    an insulator
    D
    an n-type semiconductor

  • The valence band at 0 K is-

    A
    completely filled
    B
    completely empty
    C
    partially filled
    D
    nothing can be said

  • The energy gaps (E_(g)) between valence band and conduction band for diamond, silicon and germanium are in the order

    A
    `E_(g)` (diamond) `gtE_(g)` (silicon)`gtE_(g)` (germanium)
    B
    `E_(g)` (daimond) `ltE_(g)` (silicon) `ltE_(g)` (germanium)
    C
    `E_(g)` (diamond) `=E_(g)` (silicon) `=E_(g)` (germanium)
    D
    `E_(g)` (diamond `gtE_(g)` (germanium) `gtE_(g)` (silicon).
    • A2Z-SEMICONDUCTOR ELECTRONICS-Classification Of Metals
    1. The valence band and conduction band of a solid overlap at low temper...

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    2. When the temperature of silicon sample is increased from 27^(@)C to 10...

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    3. Energy band in solids are a consequence of

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    4. At zero Kelvin a piece of germanium

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    5. Pure sodium (Na) is a good conductor of electricity because the 3s and...

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    6. In an insulator, the forbidden energy gap between the valence band and...

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    7. The forbidden energy band gap in conductors, semiconductors and insula...

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    8. The forbidden gap in the energy bands of germanium at room temperature...

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    9. In an semiconductor the separation between conduction band and valence...

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    10. In a good conductor the energy gap between the conduction band and the...

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    11. When phosphorus and antimony are mixed in germanium, then

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    12. To a germanium sample, traces of gallium are added as an impurity. The...

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    13. Would there be any advantage to adding n-type or p-type impurities to ...

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    14. In a P-type semi-conductor is heated

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    15. The impurity atom added to germenium to make it N-type semiconductor i...

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    16. When N-type of semiconductor is heated

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    17. To obtain a P-type germanium semiconductor, it must be dopped with

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    18. A P-type semiconductor is formed when (A). As impurity is mixed in ...

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    19. In case of a semiconductor, which of the following statement is wrong?

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    20. In a P-type semi-conductor

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