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Which of the following pairs of ions hav...

Which of the following pairs of ions have the same electronic configuration A)`Cr^(+3),Fe^(+3)` B)`Fe^(+3),Mn^(+2)` C)`Fe^(+3),Co^(+3)` D)`Sc^(+3),Cr^(+3)`

A

`Cr^(3+)Fe^(3+)`

B

`Mn^(2+),Fe^(3+)`

C

`Fe^(3+) Co^(3+)`

D

`Sc^(3+),Cr^(3+)`

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-THE D AND F-BLOCK ELEMENTS -Assingnment(Section -A ( Objective Type Questions)(One option is correct))
  1. Which is the most common oxidation state of lanthanoids?

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  2. When intimate mixture of potassium dichromate and potassium chloride i...

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  3. Which of the following pairs of ions have the same electronic configur...

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  4. Cr(2)O(7)^(2-)+Xoverset(H^(o+))rarrCr^(3+)+H(2)O+ "oxidised product" o...

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  5. The reducing nature of any metal in aqueous solution depends upon a...

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  6. Which of the following oxide is basic ?

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  7. The spin only magnetic moment of transition metal ion found to be 5.92...

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  8. The correct electronic configuration of lanthanum is

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  9. Give the general electronic configuration of actinoids

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  10. Lanthanoid which is radioactive is

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  11. Which is correct

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  12. Lanthanides and Actinides generally differ in

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  13. Acidified K(2)Cr(2)O(7) on reaction with hydrogen peroxide give deep b...

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  14. Hybridisation of chromium ions in chromate and dichromate ions is resp...

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  15. Equivalent weight of Baeyer's reagent is

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  16. On oxidation with KMnO(4) in acidic medium , SO(2) is oxidised to

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  17. MnO(4)^(2-)+H^(+) to "Product" Product is formed

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  18. Which is coloured because of d-d transition ?

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  19. FeO*Cr(2)O(3) underset(O(2)) overset(Na(2)CO(3))to A overset(H(2)SO(4)...

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  20. Number of moles of ferrous sulphate oxidised by 1 mole of potassium pe...

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