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Electronic configuration of Fe^2+..........

Electronic configuration of `Fe^2+`.........

A

`[Ar] 4s^2 3d^4`

B

`[Ar] 4s^1 3d^5`

C

`[Ar]3d^6`

D

`[Ar]3d^8`

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Maximum magnetic moment is shown by

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  2. Maximum oxidation number of manganese is in

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  3. Electronic configuration of Fe^2+.........

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  4. Write the electronic configuration of Cr ( Z = 24).

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  5. Increasing order of paramagnetism is

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  6. What are transition elements ? Which of the d block elements are not r...

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

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  8. What is the basic difference between the electronic configurations of ...

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  9. Why are f-block elements placed at the bottom of the periodic table ? ...

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  10. Give an explanation for the following observation : The gradual decrea...

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  11. Give an explanation for the following observation : The greatest numbe...

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  12. Write the iupac name of following : [Cr (NO2) 2(H2O)4 ]NO3

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  13. Explain the following observation : In general, the atomic radii of tr...

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  14. The E(M^(2+) // M)^@ for copper is positive (0.34 V). Copper is the on...

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  15. Account for the following : The E^@ value for the Mn^(3+)|Mn^(2+) coup...

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  16. Explain the following observation : Cu^+ ion is not known in aqueous s...

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  17. Explain the following observations : Although Co^(2+) ion appears to b...

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  18. Why E^(Theta) values for Mn, Ni and Zn are more negative than expected...

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  19. Write chemical reaction for preparation of K2Cr207 from chromite ore.

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  20. Give oxidation of KI by acidified K2Cr2O7 .

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