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Question
What is actinoid contraction?
Solution
The general trend in lanthanoids is observable in the actinoids as well. There is a gradual decrease in the size of atoms or M3+ ions across the series. This may be referred to as the actinoid contraction.
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RELATED QUESTIONS
Give a reason for the following:
Actinoids show irregularities in their electronic configurations.
Write four points of distinction between Lanthanoids and Actinoids.
How do you prepare:
Actinoid elements show wide range of oxidation states.
Choose the most correct option.
In which of the following series all the elements are radioactive in nature?
Manganese in the +2 oxidation state is more stable than +3 oxidation state where as iron is stable at +3 oxidation state than +2 oxidation state. Explain why?
Which of the following actinoids shows +6 oxidation state?
The actinoid contraction is attributed to the ____________.
The inner transition metals of 5f series are known as ____________.
Maximum oxidation state exhibited by Chlorine is ______.
Assertion: Actinoids form relatively less stable complexes as compared to lanthanoids.
Reason: Actinoids can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding.
