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Why transition element show coloured Ion...

Why transition element show coloured Ions ? Explain.

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Transition elements

The tendency of the transition elements to form coloured compounds is attributed to

Why do transition elements show variable oxidation states ? Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z= 30).

Generally transition elements form coloured salts due to the presence of unpaired electrons, Which of the following compounds will be coloured in solid state ?

Why transition metals are generally coloured ?

MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Express 2133 in roman numbers.

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  2. Express 2135 in roman numbers.

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  3. Why transition element show coloured Ions ? Explain.

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  4. Out of Cu^+ and V^+2 which will be coloured and why ? (Atomic number O...

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

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

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

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  8. Express 2137 in roman numbers.

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

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

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

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

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

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

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

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

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

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

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

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

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