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Complete the following chemical equation...

Complete the following chemical equation : `Cr_2O_7^(2-) (aq)+ H_2S (g)+ H^(+) (aq) rarr`

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Why the actinoids exhibit a large number of oxidation states than the ...

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  2. Transition elements and their compounds are found to be good catalysts...

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  3. Complete the following chemical equation : Cr2O7^(2-) (aq)+ H2S (g)+ H...

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  4. Complete the following chemical equation : Cu^(2+) (aq) + I^(-) (aq) ...

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  5. How would you account for the following ? The oxidising power of oxoan...

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  6. How would you account for the following ? The third ionization enthalp...

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  7. How would you account for the following ? Cr^(2+) is stronger reducing...

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  8. Complete the following chemical equation : MnO4^(-)(aq) + S2O3^(2-)(aq...

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

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  10. Explain the following observation : La^(3+) (Z =57) and Lu^(3+) (Z = 7...

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  11. Explain the following observation : Among the divalent cations in the ...

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

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  13. Give reason for the following : Mn^(3+) is a good oxidising agent.

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

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  15. Express 2138 in roman numbers.

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  16. Express 2150 in roman numbers.

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  17. What is gypsum?

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  18. Express 2151 in roman numbers.

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

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

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