The actinoids exhibit more number of oxidation states in ge…

Chemistry D and F - Block Elements General Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

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

The actinoids are more reactive than the lanthanoids.

The 5f orbitals extend farther from the nucleus than the 4f orbitals.

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

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

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The distance between the nucleus and 5 ƒ orbitals (actinides) is more than the distance between the nucleus and 4 ƒ orbitals (lanthanides). Hence the hold of nucleus on valence electron decreases in actinides. For this Statement-2 the actinoids exhibit more number of oxidation states in general.

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