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Write down the electronic configuration ...

Write down the electronic configuration of :
(i) `Cr^(3+)`
(ii) `Cu^(+)`
(iii) `Co^(2+)`
(iv) `Mn^(2+)`
(v) `Pm^(3+)`
(vi) `Ce^(4+)`
(vii) `Lu^(2+)`
(viii) `Th^(4+)`

Text Solution

Verified by Experts

(i) `Cr^(3+)=[Ar]3d^(3)`
(ii) `Cu^(+)=[Ar]3d^(10)`
(iii) `Co^(2+)=[Ar]3d^(7)`
(iv) `Mn^(2+)=[Ar]3d^(5)`
(v) `Pm^(3+)=[Xe]4f^(4)`
(vi) `Ce^(4+)=[Xe]`
(vii) `Lu^(2+)=[Xe]4f^(14)5d^(1)`
(viii) `Th^(4+)=[Rn]`
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U-LIKE SERIES-THE D-AND F-BLOCK ELEMENTS -NCERT TEXTBOOK EXERCISES
  1. Write down the electronic configuration of : (i) Cr^(3+) (ii) Cu^(...

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  2. Why are Mn^(2+) compounds more stable than Fe^(2+) towards oxidation t...

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  3. Explain briefly how +2 state becomes more and more stable in the first...

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  4. To what extent do the electronic configurations decide the stability o...

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  5. What may be the stable oxidation state of the transition element with ...

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  6. Name the oxometal anions of the first series of the transition metals ...

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  7. In what way is the electronic configuration of the transition elements...

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  8. What are the different oxidation states exhibited by the lanthanoids ?

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  9. Explain giving reasons : (i) Transition metals and many of their com...

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  10. Describe the preparation of potassium dichromate from iron chromite or...

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  11. Describe the oxidising action of potassium dichromate and write the io...

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  12. Describe the preparation of potassium permanganate. How does the acidi...

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  13. For M^(2+)//M and M^(3+)//M^(2+) systems, the E^(@) values for some me...

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  14. Predict which of the following will be coloured in aqueous solution ? ...

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  15. Compare the stability of +2 oxidation state for the elements of the fi...

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  16. Compare the chemistry of actinoids with that of the langthanoids with ...

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  17. How would you account for the following : (i) Of the d^(4) species, ...

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  18. What is meant by 'disproportionation'? Give two examples of disproport...

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  19. Which metal in the first series of transition metals exhibits +1 oxida...

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  20. Calculate the number of unpaired electrons in the following gaseous io...

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