Home
Class 11
CHEMISTRY
The electrical conductivity of a metal d...

The electrical conductivity of a metal decreases with rise in temperature while that of semi-conductor increases. Justify.

Text Solution

Verified by Experts

In case of metals, with increase of temperature , the kernels start vibrating and thus offer resistance to the flow of electrons. Hence, conductivity decreases. In case of semiconductors, with increase of temperature , more electrons can shift from valence band to conduction band. Hence, conductivity increases.
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise ANALYTICAL (PROBLEMS )|11 Videos

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise COMPETITION FOCUS (I.MULTIPLE CHOICE)|52 Videos

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise ADDITIONAL QUESTIONS ( LONG ANSWER )|9 Videos

  • STATES OF MATTER : GASES AND LIQUIDES

    PRADEEP|Exercise VIII. ASSERTION-REASON TYPE QUESTIONS (TYPE-II)|12 Videos

  • STRUCTURE OF ATOM

    PRADEEP|Exercise Competition Focus (JEE (Main and Advanced)/Medical Entrance (IX. Assertion And Reason Type Questions (Type II))|12 Videos

Similar Questions

Explore conceptually related problems

The electrical conductivity of metals ________ with decrease in temperature.

The electrical resistance of the following decreases with rise in temperature

The electrical conductivity of semiconductors ……. With increase of temperature.

why does the electrical conductivity of semiconductors increse with rise in temperature?

Electrical conductivity of semiconductor A… with rise in temperature . Here , A refers to

PRADEEP-STATES OF MATTER: SOLID MATTER-ANALYTICAL (QUESTION)
  1. Why ureas has a sharp melting point but glass does not ?

    Text Solution

    |

  2. The mineral haematite, Fe(2)O(3) consists of a cubic close packed ar...

    Text Solution

    |

  3. Zine oxide is white but it turns yellow on heating . Explain.

    Text Solution

    |

  4. Why does zinc oxide exhibit enhanced electrical conducity on heating ?

    Text Solution

    |

  5. The electrical conductivity of a metal decreases with rise in temperat...

    Text Solution

    |

  6. The ions of NaF and MgO have the same number of electrons and inter nu...

    Text Solution

    |

  7. Diamond and solid rhombic sulphur both are covalent solids but the lat...

    Text Solution

    |

  8. NaCl and CsCl have similar formular . Then why they have differnet st...

    Text Solution

    |

  9. Why is coordination number of 12 not found in lonic crystals ?

    Text Solution

    |

  10. Analyses shows that FeO has a non-stoichiometric composition with form...

    Text Solution

    |

  11. ZnO crystals on heating acquires the formuls Zn(1+x)O. Or There is...

    Text Solution

    |

  12. If the atoms of an element have the radius r, then in a primitive cubi...

    Text Solution

    |

  13. Out of NaCl and CsCl , which one is more stable and why ?

    Text Solution

    |

  14. In a crystal, Frenkel defect is not shown by alkali metal halides but ...

    Text Solution

    |

  15. What is the arrangement of atoms in the lattice structure of diamond a...

    Text Solution

    |

  16. The figures given below show the location of atoms in three crystallog...

    Text Solution

    |

  17. r(Na^(+))" and " r(Cl^(-)) represent radius of Na^(+) and Cl^(-) ions ...

    Text Solution

    |