Home
Class 12
CHEMISTRY
Why are the ionisation energies of 5d el...

Why are the ionisation energies of 5d elements greater than 3d elements?

Text Solution

Verified by Experts

In the 5d series, after lanthanum `( Z= 57)` , there is langthanoid contraction.In each group, the sizeof 5d element is smaller while nuclear charge is greater than 3d element. Hence, ionization energies of 5 d elements are greater than 3d elements.
Promotional Banner

Topper's Solved these Questions

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise NCERT (QUESTIONS AND EXERCISES WITH ANSERS)|10 Videos

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise NCERT INTEXT UNSOLVED QUESTIONS|10 Videos

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise TEST YOUR GRIP( FILL IN THE BLANKS)|33 Videos

  • CORDINATION COMPOUNDS

    PRADEEP|Exercise Important Questions|28 Videos

  • ELECTROCHEMISTRY

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|25 Videos

Similar Questions

Explore conceptually related problems

The ionisation energies of tranition elements are:

Consider the following statements I.First ionisation energy of group 2 elements is greater than the corresponding elements of group 13 II.it is always difficult to pull out electrons from stable configuration Select the correct statement

The first ionisation energies of the elements of the transition series.

How does the ionisation energy of 1st group elements very ?

Higher values of ionisation energies of the 5d-transition elements are consistent with the:

Why the first ionisation energy of carbon atom is greater than that of boron atom whereas, the reverse is true for the second ionisation energy.

PRADEEP-D- AND F-BLOCK ELEMENTS-CONCEPTUAL QUESTIONS
  1. Decide giving reason which one of the following pairs exhibits the pr...

    Text Solution

    |

  2. (a) of the ions Ag^(+),Co^(2+) and Ti^(+), which one will be coloured ...

    Text Solution

    |

  3. Why are the ionisation energies of 5d elements greater than 3d element...

    Text Solution

    |

  4. Describe giving reason which one of the following pairs has the proper...

    Text Solution

    |

  5. Give reason for the following features of transition metal chemistry: ...

    Text Solution

    |

  6. The 4d and 5d series of transition metals have more frequency metal-me...

    Text Solution

    |

  7. Give reasons for each of the following: (i) Size of trivalent lantha...

    Text Solution

    |

  8. Assign reason for each of the following statement: (i) The largest n...

    Text Solution

    |

  9. (i) Which is a stronger reducing agent Cr^(2+) or Fe^(2+) and why ? ...

    Text Solution

    |

  10. Assign reasons for each of the following : (i) Manganese exhibits th...

    Text Solution

    |

  11. Explain why Zn shown only +2 oxidation state.

    Text Solution

    |

  12. Why is first ionization enthalpy of Cu higher than that of Na ?

    Text Solution

    |

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

    Text Solution

    |

  14. (a) Following are the transition metal ions of 3d series: Ti^(4+),V^...

    Text Solution

    |

  15. Write the formula of different oxides of manganese. What is the oxidat...

    Text Solution

    |

  16. What is the effect of increasing pH on the colour of K(2)Cr(2)O(7) sol...

    Text Solution

    |

  17. In the titratin of Fe^(2+) ions with KMnO(4) in acidic medium, why dil...

    Text Solution

    |

  18. Give the relationship between the equivalent weight and molecular weig...

    Text Solution

    |

  19. Why is it not advisable to dissolve KMnO(4) in conc. H(2)SO(4) ?

    Text Solution

    |

  20. Why in permanganate ion, there is a covalency between Mn and oxygen ?

    Text Solution

    |