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Explain the following observations: (i...

Explain the following observations:
(i) Transition elements generally form coloured compounds.
(ii) Zinc is not regarded as transition element.

Text Solution

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(i) Transition elements generally form coloured compounds on account of d-d transitions. Due to partial absorption of visible light
(ii) Zinc, outermost configuration `3d^(10)4s^(2)` is not regarded as transition element on account of completely filled d-orbitals.
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OSWAAL PUBLICATION-D - BLOCK ELEMENTS F - BLOCK ELEMENTS -TOPIC-1 (D - BLOCK ELEMENTS, THEIR PROPERTIES AND COMPONDS)(SHORT ANSWER TYPE QUESTIONS - I)
  1. Explain briefly how +2 state becomes more and more stable in the first...

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  2. Name be oxo-metal anions of the first series of the transition metals ...

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  3. What are the characteristics of the transition elements and why are th...

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  4. In what way is the electronic configuration of transition elements dif...

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  5. How is potassium permanganate ( KMnO4) prepared from MnO2 ? write the ...

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  6. Write the structure of MnO4^(2-) and MnO(4)^(-) ions.

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  7. Explain why: (i) E^0 for Mn^(3+)//Mn^(2+) couple is more positive th...

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  8. Complete the following chemical equations: (i) MnO(4)^(-) (aq) + S2O...

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  9. Assign reasons for the following: (i) Copper (I) ion is not known in...

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  10. Assign reasons for each of the following: (i) Transition metals gene...

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  11. How would you account for the following: (i) Cr^(2+) is reducing in ...

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  12. State reasons for the following: (i) Cu(I) ion is not stable in an a...

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  13. Explain giving reasons : (i) Transition metals and their compounds g...

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  14. Account for the following: (i) Cu^(+) ions are not stable in aqueous s...

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  15. How would you account for the following: (i) The atomic radii of the...

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  16. Name the reaction that takes place when a mixture of potassium dichrom...

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  17. Account for the following: (i) In the series Sc to Zn, the enthalpy ...

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  18. Account for the following: (i) Transition elements exhibit higher en...

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  19. Explain the following observations: (i) Generally, there is an incr...

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  20. Explain the following observations: (i) Transition elements generall...

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