Home
Class 11
CHEMISTRY
f-centre is...

f-centre is

Text Solution

Verified by Experts

The site where electron is entrapped in the anion vacancy is called F-centre.
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise ADDITIONAL QUESTIONS ( SHORT ANSWER )|44 Videos

  • STATES OF MATTER: SOLID MATTER

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

  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS (LONG ANSWER)|4 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

F - centres in an ionic crystals are

What are F-centres in ionic crystals ? Why are crystals having F-centres are paramagnetic in nature.

The presence of F-centres in a crystal makes it

Define the terms (i) F-centres (ii) n-type semi-conductors (iii) Ferrimagnetism.

PRADEEP-STATES OF MATTER: SOLID MATTER-ADDITIONAL QUESTIONS (VERY SHORT ANSWER )
  1. Why is potassium chloride sometimes violet instead of pure white ?

    Text Solution

    |

  2. What is the difference between 13-15 and 12-16 compounds ?

    Text Solution

    |

  3. f-centre is

    Text Solution

    |

  4. Name the non-stoichiometric point defect responsible for the colour of...

    Text Solution

    |

  5. Name the type of defect that occurs in the crystals of zinc sulphide.

    Text Solution

    |

  6. Which point defect in crystals does not alter the density of the relev...

    Text Solution

    |

  7. Which point defect in crystals of a solid decreases the density of the...

    Text Solution

    |

  8. Which stoichiometric defect in crystals increses the density a solid?

    Text Solution

    |

  9. intrinsic and extrinsic semiconductor

    Text Solution

    |

  10. What type of semi-conductors is produced when silicon is doped with ar...

    Text Solution

    |

  11. How do paramagnetic substances differ from ferromagnetic ?

    Text Solution

    |

  12. What happens when a ferromagnetic or anti-ferromagnetic or a ferrimagn...

    Text Solution

    |

  13. Ferromagnetic subtances make permanent magnets. Give reason.

    Text Solution

    |

  14. What happens when ferrimagnetic Fe3O4 is heated to 850 K and why ?

    Text Solution

    |

  15. What happens when ferromagnetic substance is heated to high temperatur...

    Text Solution

    |

  16. What type of substances exhibit antiferromagnetism ?

    Text Solution

    |

  17. How is electrical conductivity caused in (a) semiconductors, (b) metal...

    Text Solution

    |

  18. How do the electrical conductivity and resistivity of the following cl...

    Text Solution

    |

  19. How may the conductivity of an intrinsic semiconductor be increased ?

    Text Solution

    |

  20. What is energy gap in band theory ? Compare its size in conductors, se...

    Text Solution

    |