Karnataka Board PUCPUC Science 2nd PUC Class 12

The chemistry of actinoids is more complicated as compared to lanthanoids - Chemistry

Advertisements
Advertisements
Answer in Brief

How would you account for the following:

The chemistry of actinoids is more complicated as compared to lanthanoids.

Chemistry of actinoids is complicated as compared to lanthanoids. Give two reasons.

Why is the chemistry of actinoids complicated as compared to lanthanoids?

Advertisements

Solution 1

The energy difference between the 6d, 7s and 5f orbitals is very small in actinoids. In addition, the 5f orbitals of the actinoids are less shielded than the 4f orbitals of the lanthanoids. Thus, in the lanthanoids, only 4f electrons of Ce participate in chemical bonding, whereas in the lighter actinoids, up to americium, the 5f electrons also take part. This makes the chemistry of actinoids more complicated than that of lanthanoids

Solution 2

The reasons are as follows:

  1. Actinoids display a large number of oxidation states, while lanthanoids primarily show only three oxidation states.
  2. Actinoids are radioactive in nature.
  Is there an error in this question or solution?
2014-2015 (March) Panchkula Set 1

RELATED QUESTIONS

Distinguish between lanthanoid and actinoids.


Give a reason for the following: 

Actinoids show irregularities in their electronic configurations.


How would you account for the following : Actinoid contraction is greater than lanthanoid contraction.


Why do actinoids show a wide range of oxidation states?


Write on similarity between the chemistry of lanthanoids and actinoids.


With reference to structural variability and chemical reactivity, write the differences between 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 electronic configuration


Compare the chemistry of the actinoids with that of lanthanoids with reference to oxidation states


Compare the chemistry of the actinoids with that of lanthanoids with reference to chemical reactivity.


Write four points of distinction between Lanthanoids and Actinoids.


What is the position of actinoids in periodic table ?


How would you account the following :

Highest fluoride of Mn is MnF4 whereas the highest oxide is Mn2O7.


How do you prepare:

Actinoid elements show wide range of oxidation states.


Give reasons for the following:
The chemistry of actinoids elements is not so smooth as that of the lanthanoids.


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?


Identify the CORRECT statement.


Actinoid series begins at ____________ and ends at ____________.


The actinoid contraction is attributed to the ____________.


The number of unpaired f-electrons in ytterbium (Z = 70) is ____________.


The electronic configuration of Ux+ ion is [Rn]. What is the value of x?

[At. No. of U = 92]


Which among the following actinoids exhibits highest oxidation state +7?


Which of the following properties is NOT of actinoids?


Which among the following elements is radioactive?


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


The incorrect statement among the following is: 


What is actinoid contraction?


Why do actinoids show variable oxidation states?


What are actinoids? Give their general electronic configuration.


Share
Notifications



      Forgot password?
Use app×