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Write the conductivity order of aluminiu...

Write the conductivity order of aluminium phosphide, silicon and cadmium sulphide.

Text Solution

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At room temperature, conductivity will be more if the polaiity of the covalent bond is more. `Si-Si` bond is non-polar, Al - P bond is slightly polar and `Cd -S` bond is more polar.
Increasing order of conductivity :
Silicon `lt` Aluminium phosphide `lt` Cadmium sulphide.
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Knowledge Check

  • Assertion (A) When a wire of aluminium and another wire of silicon are heated from room temperature to 80^(@)C , the conductivity of aluminium increases and that of silicon decreases. Reason (R) Aluminium has positive temperature coefficient of resistivity and silicon has negative temperature coefficient of resistivity.

    A
    Both (A) and (R) are correct and (R) is the correct explanation of (A).
    B
    Both (A) and (R) are correct but (R) is not the correct explanation of (A)
    C
    (A) is correct but (R) is not correct
    D
    (A) is not correct but (R) is correct

  • The conductivity values in MnO is in the order of

    A
    `10^(-6)-10^(4)ohm^(-1)cm^(-1)`
    B
    `10^(3)-10^(8)ohm^(-1)cm^(-1)`
    C
    `10^(-10)-10^(-22)ohm^(-1)cm^(-1)`
    D
    `10^(-6)-10^(4)ohm^(-1)cm^(-1)`

  • The electrical conductivity of aluminium is twice that of copper on the basis of

    A
    weight to volume bais
    B
    weight to weight basis
    C
    volume to volume basis
    D
    none of these

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