Larger number of oxidation states are exhibited by the acti…

Chemistry D and F - Block Elements General Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being.

Lesser energy difference between 5f and 6d than between 4f and 5d orbitals

More energy difference between 5f and 6d than between 4f and 5d orbitals

More reactive nature of the actinoids than the lanthanoids

4f orbitals more diffused than the 5f orbitals

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The correct answer is:

There is very small energy difference between 5f and 6d orbitals in actinoids than those of between 4f and 5d orbitals. Hence, electrons present in 5f and 6d orbitals can take part in bonding.

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