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The actinoids exhibit more number of oxi...

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

A

the 5f-orbitals are more buried than the 4f-orbitals

B

there is a similarity between 4f and 5f in their angular part of the wave function

C

the actinoids are more reactive than the lanthanoids

D

the 5f-orbitals extend further from the nucleus than the 4f-orbitals

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The correct Answer is:
D
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