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Question
Why do actinoids show a wide range of oxidation states?
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Solution
In actinoids, the 5f, 6d and 7s shells are present. These three shells are of comparable energies, therefore, electrons can be removed from these shells. This gives rise of variable oxidation states in actinoids.
RELATED QUESTIONS
How would you account for the following:
The chemistry of actinoids is more complicated as compared to lanthanoids.
Give a reason for the following:
Actinoids show irregularities in their electronic configurations.
Write on similarity between the chemistry of lanthanoids and actinoids.
Which is the last element in the series of the actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element.
Compare the chemistry of the actinoids with that of lanthanoids with reference to chemical reactivity.
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The chemistry of actinoids elements is not so smooth as that of the lanthanoids.
Choose the most correct option.
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[At. No. of U = 92]
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.
