Home
Class 12
CHEMISTRY
Four sucessive members of the first two ...

Four sucessive members of the first two transition elements are listed below with their atomic numbers. Which one of them is expected to have highest third ionisation enthalpy ?

A

Vanadium (Z = 23)

B

Chromium (Z = 24)

C

Manganese (Z = 25)

D

Iron (Z = 26)

Text Solution

Verified by Experts

The correct Answer is:
C
For third ionisation energy, the last configuration are :
`V : 3d^(3) : Cr : 3d^(4) : Mn : 3d^(5) , Fe : 3d^(6)`
So Mn has stable configuration due to half filld d-subshell.
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY OF D-AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-III)|8 Videos

  • CHEMISTRY OF D-AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Recent Examination Questions|11 Videos

  • CHEMISTRY OF D-AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level -I) Transition metal compounds and their Characteristics|53 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    MODERN PUBLICATION|Exercise Recent Examination Questions|4 Videos

  • CHEMISTRY OF P - BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise Recent Examination Questions|20 Videos

Similar Questions

Explore conceptually related problems

Which of the following configurations would you expect to have the highest second ionisation enthalpy?

Which electronic configuration of neutral atoms will have the highest first ionisation potential

Among the elements Li, K,Ca, S and Kr , which one is expected to have the lowest first ionization enthalpy and which one has the highest first ionization enthalpy ?

Name the isotope of hydrogen which have atomic number one mass number two.

MODERN PUBLICATION-CHEMISTRY OF D-AND F-BLOCK ELEMENTS-Multiple Choice Questions (Level-II)
  1. Lanthanoids are :

    Text Solution

    |

  2. The number of moles of KMnO(4) reduced by one mole of Kl in alkaline m...

    Text Solution

    |

  3. Four sucessive members of the first two transition elements are listed...

    Text Solution

    |

  4. The aqueous solution containing which one fo the following ions will b...

    Text Solution

    |

  5. Copper sulphate dissolves in excess of KCN to give :

    Text Solution

    |

  6. Which is not correct about the chemistry of 3d and 4f series elements ...

    Text Solution

    |

  7. The approximate percentage of iron in mischmetal is :

    Text Solution

    |

  8. To an acidic solution of anion a few drops of acidified KMnO(4) are ...

    Text Solution

    |

  9. The electronic configuration of transition element "X", is +3, oxidati...

    Text Solution

    |

  10. The magnetic nature of elements depends on the presence of unpaired el...

    Text Solution

    |

  11. Which of the following is amphoteric oxide ? Mn(2)O(7), CrO(3), Cr...

    Text Solution

    |

  12. Gadolinium belongs to 4f series. Its atomic number is 64. Which of the...

    Text Solution

    |

  13. KMnO(4) acts as an oxidising agent in alkaline medium. When alkaline K...

    Text Solution

    |

  14. Although Zirconium belongs to 4d transition series and Hafnium to 5d t...

    Text Solution

    |

  15. Why is HCl not used to make the medium acidic in oxidation reactions ...

    Text Solution

    |

  16. In a reaction K(2)MnO(4) is converted into KMnO(4) The change in the ...

    Text Solution

    |

  17. The stable oxidation state of Ce (Z = 58) is

    Text Solution

    |

  18. In the reaction : CrO(4)^(2-) + X to Cr(2)O(7)^(2-) X is

    Text Solution

    |

  19. In which of the following pairs, the atomic size is almost the same ?

    Text Solution

    |

  20. Which of the following statement is not correct ?

    Text Solution

    |