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Complete the chemical reaction : S2O3^(2...

Complete the chemical reaction : `S_2O_3^(2-)+ Cr_2O_7^(2-)+ H^(+) rarr`

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Calculate equivalent weight of KMnO4 in alkaline medium.

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

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  3. Complete the chemical reaction : S2O3^(2-)+ Cr2O7^(2-)+ H^(+) rarr

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  4. The shape of sulphate ion is

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  5. In chromyl chloride test orange red vapours are obtained. These are du...

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  6. Why is La(OH)3 more basic than Lu(OH)3 ?

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  7. What is the most common oxidation state in the Lanthanoids ?

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  8. How many unpaired electrons are present in Gd(Z = 64) ?

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  9. Name the actinoid used for the manufacture of fine rods for atomic rea...

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  10. Arrange Ce^(3+) (Z = 58), Sm^(3+) (Z = 62) and Yb^(3+)(Z = 70) in decr...

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  11. Name the basic cause of similar atomic radii of Hf and Zr.

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  12. Does actinoids show actinoid contraction similar to lanthanoid contrac...

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  13. Name the trivalent lanthanoid having the configuration [Xe] 4f^7.

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  14. Which of the following ion is colourless ? U^(3+), Cm^(4+), Th^(4+)

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  15. Write the number of unpaired electrons in Pr ^(4+)

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  16. True of False : Mn2O7 is a basic oxide.

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  17. Write reactions of KMnO4, in neutral medium with : MnSO4

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  18. Why are Ni^(2+) compounds thermodynamically more stable than Pt^(2+)...

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  19. True of False : Both La^(3+) and Lu^(3+) are diamagnetic.

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  20. True of False : The number of unpaired electrons in V^(2+) is 2

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