Home
Class 12
CHEMISTRY
(a) Why do the transition elements exhib...

(a) Why do the transition elements exhibit higher enthalpies of atomization? (b) Draw the structure of `Cr_2O_7^(2-)` ion. (c) Why is hydrochloric acid not used in potassium permanganate titrations?

Promotional Banner

Topper's Solved these Questions

  • D AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise REVISION EXERCISES ( LONG ANSWER QUESTION)|24 Videos

  • D AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS|16 Videos

  • D AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise REVISION EXERCISES (VERY SHORT ANSWER QUESTION)|25 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|13 Videos

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise UNIT PRACTICE TEST|20 Videos

Similar Questions

Explore conceptually related problems

Why do the transition elements exhibit higher enthalpies of atomisation?

Why do the transition elements have higher enthalpies of atomisation? In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why?

(b ) Draw the structures of Cr_(2) O_(7)^(2-) , CrO_(4)^(-2) MnO_(4)^(-)

(a) Why do transition elements show catalytic properties? (b) Calculate equivalent weight of KMnO_4 in neutral medium. ( c) What is the cause of lanthanoid contraction?

Orange colour of Cr_(2)O_(7)^(2-) ion changes to yellow when treated with an alkali. Why ?

Number of electron involved in the reduction of Cr_(2)O_(7)^(2-) ion in acidic solution of Cr^(3+) is

MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-REVISION EXERCISES ( SHORT ANSWER QUESTION)
  1. (a) Define transition elements. Give the general electronic configurat...

    Text Solution

    |

  2. (a) Why is the highest oxidation state of a transition metal exhibited...

    Text Solution

    |

  3. (a) Why do the transition elements exhibit higher enthalpies of atomiz...

    Text Solution

    |

  4. (a) Why do Zr and Hf have similar properties? (b) What happens when K2...

    Text Solution

    |

  5. Give the preparation of potassium permanganate from pyrolusite ore.

    Text Solution

    |

  6. (a) What happens when K2Cr2O7 is heated strongly? (b) Transition eleme...

    Text Solution

    |

  7. (a) Describe the preparation of potassium dichromate from chromite ore...

    Text Solution

    |

  8. (a) What is lanthanoid contraction? What is the cause of lanthanoid co...

    Text Solution

    |

  9. (a) Write the electronic configuration of: (i) Co^(2+) (27) (ii) C...

    Text Solution

    |

  10. (a) What is the cause of lanthanoid contraction? Discuss. (b) What is ...

    Text Solution

    |

  11. When chromite ore FeCr(2)O(4) is fuse with NaOH in presence of air, a ...

    Text Solution

    |

  12. Complete the following chemical equations : (i) 8MnO(4)^(-)+3S(2)O(3...

    Text Solution

    |

  13. Give reason for the following : (i) Mn shows the highest oxidation s...

    Text Solution

    |

  14. (a) Write the structure of Cr2O7^(2-) Give two uses of K2Cr2O7 . ...

    Text Solution

    |

  15. (a) Explain the magnetic behaviour of transition metals. (b) Write...

    Text Solution

    |

  16. Explain :(i) Variable oxidation states of d-block elements (ii) d-bloc...

    Text Solution

    |

  17. (a) Define transition elements. (b) Give general electronic configurat...

    Text Solution

    |

  18. Give reason. (a) Cerium (Ce) exhibits +4 oxidation state.(b) Actinoid ...

    Text Solution

    |

  19. Write any three applications of d and f-block elements.

    Text Solution

    |

  20. (i) Which of the following are coloured in aqueous solution ? Give rea...

    Text Solution

    |