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Write the name of metal which shows only...

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

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Complete the following chemical equation : KMnO4 overset (513K) rarr

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

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

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

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

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

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

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

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

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  10. Give three differences between lanthanides and actinides.

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

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

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

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

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  15. Why Zr and Hf exhibit similar properties ?

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  16. Why transition metals show catalytic properties?

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  17. Complete the following chemical equation : MnO2+ KOH + O2 rarr

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

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

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  20. The elements of 3d transition series are given as: Sc Ti V Cr Mn Fe Co...

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