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Why +3 oxidation state of Fe (Z = 26) is...

Why +3 oxidation state of Fe (Z = 26) is more stable than its +2 oxidation state ?

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Express 1375 in roman numbers.

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  2. Express 1376 in roman numbers.

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  3. Why +3 oxidation state of Fe (Z = 26) is more stable than its +2 oxida...

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  4. Is Au (Z = 79) a transition metal or not ? Explain.

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  5. Express 1377 in roman numbers.

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  6. Express 1378 in roman numbers.

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

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

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

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

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

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  12. Why is the third ionization enthalpy of manganese (At. no.=25) unexpec...

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

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  14. Express 1382 in roman numbers.

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

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

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

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

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  19. Fill in the blanks- is the vitamin which is the component of rhodopsi...

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

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