Home
Class 11
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 lanthanide contraction. As a result in each group the atomic size of 5d element is small and its nuclear charge is large. Hence, electrons from both can participate in bonding.
Promotional Banner

Topper's Solved these Questions

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE|Exercise Exercise 2|40 Videos

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE|Exercise Exercise 3|65 Videos

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE|Exercise Match the column|1 Videos

  • CHEMICAL EQUILIBRIUM

    RESONANCE|Exercise Advanced Level Problems (Part-3)(Stage-5)|2 Videos

  • GASEOUS STATE

    RESONANCE|Exercise PHYSICAL CHMISTRY (Gaseous State)|47 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:

RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. Which element among d-block element has(i) the lowest melting point an...

    Text Solution

    |

  2. Why Zinc has lowest melting point in 3d series?

    Text Solution

    |

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

    Text Solution

    |

  4. Why do transition elements show variable oxidation state?

    Text Solution

    |

  5. What is the most common oxidation state of first transtion series.?

    Text Solution

    |

  6. Name the three factors which determine the stability of a particular o...

    Text Solution

    |

  7. Why is the E^(Theta) value for the Mn^(3+)//Mn^(2+) couple much postiv...

    Text Solution

    |

  8. {:("Element",Cr,Mn,Fe),(E^(underset(-)(o))(M^(2+)//M),-0.90V,-1.18V,-0...

    Text Solution

    |

  9. Which of the following ions would form (i) coloured and (ii) colourles...

    Text Solution

    |

  10. Why Ti^(+4) complexes are diamagnetic?

    Text Solution

    |

  11. A substance is found to have a magnetic moments of 3.9BM.How many unpa...

    Text Solution

    |

  12. Explain giving reason: (a) Transition metals and many of their compo...

    Text Solution

    |

  13. Describe the general characteristics of transition elements with speci...

    Text Solution

    |

  14. Which type of reaction MnO(4)^(2-) shows with aid, dilute-alkali or wa...

    Text Solution

    |

  15. Why KMnO(4) is stored in dark bottle and water happens to it's aidic s...

    Text Solution

    |

  16. Why does AgNO(3) produce a black stain on the skin?

    Text Solution

    |

  17. Why is AgBr used in photography?

    Text Solution

    |

  18. Why it is not advisable KMnO(4) in cold and concentrated H(2)SO(4)?

    Text Solution

    |

  19. What happens when: (a). Green vitriol is strongly heated. (b). Mal...

    Text Solution

    |

  20. State true or false: Reaction of K(2)Cr(2)O(7) with cold and concentra...

    Text Solution

    |