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Why the transition metal compounds are c...

Why the transition metal compounds are coloured?

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This is due to the presence of incomplete d. orbitals and hence d-d transition of eléctrons is possible.
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Assertion : The purple colour of KMnO_4 , is due to the charge transfer transition. Reason : The colour of most of the transition metal complexes'is due to d-d transition. a)If both (A) and (R) are correct and (R) is the correct explanation of(A). b)If both (A) and (R) are correct, but(R) is not the correct explanation of (A). c)If(A) is correct, but (R) is incorrect. d)If both (A) and (R) are incorrect.

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V PUBLICATION-THE d- AND f- BLOCK ELEMENTS-QUESTION BANK
  1. Name the catalyst used in i) the oxidation of ammonia to nitric acid b...

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  2. Transition elements act as catalysts. Why?

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  3. Why the transition metal compounds are coloured?

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  4. Give the spin only formula fór calculating the magnetic moment of a tr...

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  5. Name the ores of Titanium?

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  6. . Name the metal, with highest melting point?

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  7. Name the common ores of i) Chromiüm ii) Molybdenum iii) Tungsten

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  8. How is potassium permanganate prepared in the laboratory?

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  9. What is the reaction between KMnO(4) and sodium thiosulphate?

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  10. Potassium permanganate KMnO(4) is not a primary standard Why?

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  11. Actinoids show, a large number of oxidation states Why?

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  12. Write the reason for the statement given below: Transition elements sh...

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  13. Which of the following would be coloured? Ti^(3+),Mn^(2+),Sc^(3+),Fe^...

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  14. Why do transition elements have many irregularities in their electroni...

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  15. Which one is paramagnetic is Sc^(3+) or Cr^(4+). Why?

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  16. Which is more basic LaOH(3) or LuOH(3) . Why?

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  17. Why Sm^(2+), Eu^(2+) and Yb^(2+) in solutions 'are good reducing agen...

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  18. Why is the third ionisation energy of manganese (At No. 25) unexpected...

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  19. Write all possible oxidation states of an element having atomic number...

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  20. Why is it not advisable to dissolve KMnO(4) in conc.H(2) SO(4)

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