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The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because:

  1. A
    the orbitals are more buried than the orbitals
  2. B
    there is a similarity between and orbitals in their angular part of the wave function
  3. C
    the actinoids are more reactive than the lanthanoids
  4. D
    the orbitals extend further from the nucleus than the orbitals

Solution & Step-by-step Explanation

In actinoids, the energy difference between , , and orbitals is very small. Also, orbitals are not as "buried" as orbitals; they extend further out into space and can participate in bonding more effectively. This allows actinoids to lose or share more electrons, leading to a wider range of oxidation states (up to in some cases) compared to lanthanoids, which predominantly show .

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The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because:
A
the orbitals are more buried than the orbitals
B
there is a similarity between and orbitals in their angular part of the wave function
C
the actinoids are more reactive than the lanthanoids
D
the orbitals extend further from the nucleus than the orbitals

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d-Block and f-Block ElementsActinoids

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