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Give reasons for the following : Copper...

Give reasons for the following : Copper cannot displace zinc from its salt solution..

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. How would you account for the following : SF(6) is kinetically inert...

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  2. Why is the highest oxidation state of a metal exhibited in its oxide...

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  3. Give reasons for the following : Copper cannot displace zinc from it...

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  4. Why the actinoids exhibit a large number of oxidation states than the ...

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  5. How would you account for the following : SF(6) is kinetically inert...

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  6. Why the actinoids exhibit a large number of oxidation states than the ...

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  7. How would you account for the following ? Most of the transition metal...

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  8. Why enthalpy of atomisation of the transition elements are quite high ...

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

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  10. Give reason, Mn^(2+) ion is more paramagnetic than Fe^(2+) ion.

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  11. Complete the following chemical equation : Cr2O7^(2-) (aq)+ Fe^(2+) (a...

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

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  13. Complete the following chemical equation : MnO4^(-)(aq) + H2O2(aq)+ H^...

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  14. What are interstitial compounds ? Why are such compounds well known fo...

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  15. Write uses of actinoids.

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  16. Write reactions of K2Cr2O7, in acidic medium with Kl

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  17. Write one oxidising reaction of KMnO4 in basic medium.

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  18. What are different oxidation states exhibited by lanthanoids ?

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  19. Draw the structure of chromate ion CrO4^(2-)

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  20. Write the oxidation of H2S by acidified KMnO4.

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