The dand fblock elements - Result Question 77

####77. The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding lanthanoids, is

[2005, 2006]

(a) more energy difference between 5f and 6d orbitals than between 4f and 5d orbitals.

(b) lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitals.

(c) larger atomic size of actinoids than the lanthanoids.

(d) greater reactive nature of the actinoids than the lanthanoids.

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Solution:

  1. (b) Lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitals result in larger no. of oxidation state.


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