Home
Class 12
CHEMISTRY
Explain why: (i) E^0 for Mn^(3+)//Mn^(...

Explain why:
(i) `E^0` for `Mn^(3+)//Mn^(2+)` couple is more positive than that for `Fe^(3+)//Fe^(2+)`. (At. Nos. Mn = 25, Fe = 26).
  (ii)`Ce^(3+)` can be easily oxidised to `Ce^(4+)`. (At. No. Ce = 58).

Text Solution

Verified by Experts

(ii) `Ce^(3+)` ions having the configuration `4f^(1)d^(0)6d^(0)` can easily lose election to acquire the configuration `4f^0 5d^(0) 6s^(0)` and form `Ce^(4+)`ion.
Promotional Banner

Topper's Solved these Questions

  • D - BLOCK ELEMENTS F - BLOCK ELEMENTS

    OSWAAL PUBLICATION|Exercise TOPIC-1 (D - BLOCK ELEMENTS, THEIR PROPERTIES AND COMPONDS) LONG ANSWER TYPE QUESTIONS - I|20 Videos

  • D - BLOCK ELEMENTS F - BLOCK ELEMENTS

    OSWAAL PUBLICATION|Exercise TOPIC-1 (D - BLOCK ELEMENTS, THEIR PROPERTIES AND COMPONDS)LONG ANSWER TYPE QUESTIONS - II|12 Videos

  • D - BLOCK ELEMENTS F - BLOCK ELEMENTS

    OSWAAL PUBLICATION|Exercise TOPIC - 2 (F - BLOCK ELEMENT , LANTHANOIDS AND ACTINOIDS)(LONG ANSWER TYPES QUESTIONS)|6 Videos

  • CO-ORDINATION COMPOUNDS

    OSWAAL PUBLICATION|Exercise TOPIC-2 (WERNER.S THEORY BONDING IN CO-ORDINATION COMPOUND , VBT, CFT AND IMPORTANCE OF CO-ORDINATION COMPOUNDS) (Very Answer Type Questions)|19 Videos

  • ELECTRO-CHEMISTRY

    OSWAAL PUBLICATION|Exercise Topic - 3 ELECTROLYSIS , LAWS OF ELECTROLYSIS, BATTERIES, FUEL CELLS AND CORROSION (LONG ANSWER TYPE QUESTIONS)|4 Videos

Similar Questions

Explore conceptually related problems

Explain why Mn^(2+) is more stable than Mn^(3+) ?

Fe^(2+) and Fe^(3+) can be distinguished by :

How would you account for the following: (i) The atomic radii of the metals of the third (5d) series of transition elements are virtually the same as those of the corresponding members of the second (4d) series. (ii) The E^0 value for the Mn^(3+)//Mn^(2+) couple is much more positive than that for Cr^(3+)//Cr^(2+) couple or Fe^(3+)//Fe^(2+) couple.

Among Fe^(2+) and Fe^(3+) which is more stable? Give reason.

Why are Mn compound more stable than Fe towards oxidation to their + 3 state?

Mn^(2+) compounds are more stable than Fe^(2+) compounds towards oxidation to their +3 state, because

Which of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour? [At. Nos. Cr = 24, Mn= 25, Fe = 26, Co=27]

Account for the following: (i) In the series Sc to Zn, the enthalpy of atomisation of zinc is the lowest. (ii) The E^0 value for the Mn^(3+)//Mn^(2+) couple is much more positive than that for Cr^(3+)//Cr^(2+) .

OSWAAL PUBLICATION-D - BLOCK ELEMENTS F - BLOCK ELEMENTS -TOPIC-1 (D - BLOCK ELEMENTS, THEIR PROPERTIES AND COMPONDS)(SHORT ANSWER TYPE QUESTIONS - I)
  1. Explain briefly how +2 state becomes more and more stable in the first...

    Text Solution

    |

  2. Name be oxo-metal anions of the first series of the transition metals ...

    Text Solution

    |

  3. What are the characteristics of the transition elements and why are th...

    Text Solution

    |

  4. In what way is the electronic configuration of transition elements dif...

    Text Solution

    |

  5. How is potassium permanganate ( KMnO4) prepared from MnO2 ? write the ...

    Text Solution

    |

  6. Write the structure of MnO4^(2-) and MnO(4)^(-) ions.

    Text Solution

    |

  7. Explain why: (i) E^0 for Mn^(3+)//Mn^(2+) couple is more positive th...

    Text Solution

    |

  8. Complete the following chemical equations: (i) MnO(4)^(-) (aq) + S2O...

    Text Solution

    |

  9. Assign reasons for the following: (i) Copper (I) ion is not known in...

    Text Solution

    |

  10. Assign reasons for each of the following: (i) Transition metals gene...

    Text Solution

    |

  11. How would you account for the following: (i) Cr^(2+) is reducing in ...

    Text Solution

    |

  12. State reasons for the following: (i) Cu(I) ion is not stable in an a...

    Text Solution

    |

  13. Explain giving reasons : (i) Transition metals and their compounds g...

    Text Solution

    |

  14. Account for the following: (i) Cu^(+) ions are not stable in aqueous s...

    Text Solution

    |

  15. How would you account for the following: (i) The atomic radii of the...

    Text Solution

    |

  16. Name the reaction that takes place when a mixture of potassium dichrom...

    Text Solution

    |

  17. Account for the following: (i) In the series Sc to Zn, the enthalpy ...

    Text Solution

    |

  18. Account for the following: (i) Transition elements exhibit higher en...

    Text Solution

    |

  19. Explain the following observations: (i) Generally, there is an incr...

    Text Solution

    |

  20. Explain the following observations: (i) Transition elements generall...

    Text Solution

    |