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which of the following statements are...

which of the following statements are true about metals ?

A

Valence band overlaps with conduction band

B

the gap between valence band and conduction band is negligible

C

the gap[ between valence band and conduction band cannot be determinted

D

Valence band may ramain paratially filled

Text Solution

Verified by Experts

The correct Answer is:
A,B,D
Option (a) , (b) and ( c) are true option ( c) can be correctly stated as the gap between valence band can be determined , The gap between valence band and conduction band decide the conductivity of material .
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Knowledge Check

  • Which one of the following statements are true about metals?

    A
    Valence band overlap with conduction band
    B
    The gap between valence band and conduction bank is negligible
    C
    The gap between valence badn and conduction band cannot be determined
    D
    Valence band and conduction badn cannot be determined

  • Which of the following statements is/are true about reptiles?

    A
    They have creeping or crawling mode of locomotion
    B
    They are mostly terrestrial and body is covered by dry cornified skin, epidermal scales or scutes
    C
    Heart is three or partially four-chambered
    D
    All of the above

  • Which of the following statements are true about HCOOH ?

    A
    It is a stronger acid than `CH_(3)COOH`
    B
    It forms formly chloride with `PCl_(5)`
    C
    It gives `CO` and `H_(2)O` on heating with conc. `H_(2)SO_(4)`
    D
    It reduces Tollen's reagent

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