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प्रश्न
Compare the chemistry of the actinoids with that of lanthanoids with reference to chemical reactivity.
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उत्तर
Chemical reactivity - In the lanthanide series, the earlier members of the series are more reactive. They have reactivity that is comparable to Ca. With an increase in the atomic number, the lanthanides start behaving similar to Al. Actinoids, on the other hand, are highly reactive metals, especially when they are finely divided. When they are added to boiling water, they give a mixture of oxide and hydride. Actinoids combine with most of the non-metals at moderate temperatures. Alkalies have no action on these actinoids. In case of acids, they are slightly affected by nitric acid (because of the formation of a protective oxide layer).
संबंधित प्रश्न
Give a reason for the following:
Actinoids show irregularities in their electronic configurations.
With reference to structural variability and chemical reactivity, write the differences between lanthanoids and actinoids
Compare the chemistry of the actinoids with that of lanthanoids with reference to electronic configuration
Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.
What is the position of actinoids in periodic table ?
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 exhibits only + 3 oxidation state?
Which of the following actinoids shows +6 oxidation state?
The electronic configuration of Ux+ ion is [Rn]. What is the value of x?
[At. No. of U = 92]
The inner transition metals of 5f series are known as ____________.
Maximum oxidation state exhibited by Chlorine is ______.
There are 14 elements in actinoid series. Which of the following elements does not belong to this series?
Which of the following actinoids show oxidation states upto +7?
(i) Am
(ii) Pu
(iii) U
(iv) Np
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.
What is actinoid contraction?
What causes actinoid contraction?
What are actinoids? Give their general electronic configuration.
