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Give reason for the following : Although...

Give reason for the following : Although ‘F’ is more electronegative than 'O', the highest Mn fluoride is `MnF_4`, whereas the highest oxide is `Mn_2O_7`.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Fill in the blanks- is the vitamin which is the component of rhodopsi...

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  2. Give reason for the following : E(M^(2+)|M)^(@)values are not regular ...

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  3. Give reason for the following : Although ‘F’ is more electronegative t...

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  4. Complete the following chemical equation : 2CrO4^(2-) + 2H^(+) rarr

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  5. Complete the following chemical equation : KMnO4 overset (513K) rarr

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  6. Why do transition elements show variable oxidation states ? Name the e...

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  7. Write the name of metal which shows only +3 oxidation state.

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  8. What is lanthanoid contraction ? Name an important alloy which contain...

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  9. Complete the following equation : Cr2O7^(2-)+2OH^(-) rarr

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  10. Complete the following equation : MnO4^(-)+ 4H^(+)+ 3e^(-) rarr

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  11. Account for the following : Zn is not considered as a transition elem...

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  12. Transition metals formlarge number of complex compounds.Explain.

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

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  14. Give three differences between lanthanides and actinides.

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  15. Name a member of the lanthanoid series which is well known to exhibit ...

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  16. Complete the following equation : MnO4^(-)+ 8H^(+)+ 5e^(-) rarr

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  17. Out of Mn^(3+) and Cr^(3+) which is more paramagnetic and why ? (Atomi...

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  18. Account for the following: Mn shows the highest oxidation state of +7 ...

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  19. Why Zr and Hf exhibit similar properties ?

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  20. Why transition metals show catalytic properties?

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