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Explain the following observation : (...

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

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The correct Answer is:
2(i) They contain incompletely filled d-orbitals and unpaired electrons can undergo d-d transition by absorbing light from the visible region.
(ii) because Zinc has completely filled d-orbitals `(3d^(10))`.
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RESONANCE ENGLISH-D BLOCK ELEMENTS-EXERCISE-3 PART-III
  1. (a) Describe the general trends in the following properties of the fir...

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  2. How would you account for the fact that the transition metals and thei...

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  3. Assign reasons for the following : (i) The enthalpies of atomisatio...

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  4. How would you account for the fact that actinoids exhibit a larger num...

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  5. The weak acid, HA has a Ka of 1×10^(−9) . If 0.1 mol of this acid is ...

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  6. Explain the following observations: (i) Generally there is an increa...

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  7. How would you account for the following? (i)The atomic radii of the...

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  8. Explain the following : (i) Low spin octahedral complexes of nicke...

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  9. (a) Complete the following chemical equations: (i) Cr(2) O(7)^(2-)...

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  10. How would you account for the following? (i)The atomic radii of the...

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  11. Explain the following observation : (i) Transition elements general...

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  12. What is meant by the 'lanthanide contraction'? Mention one important f...

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

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  14. Complete the following chemical equation: (i) MnO(4)^(-)(aq)+s(2)O(3...

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

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  16. Complete the following chemical equation: (i) MnO(4)^(-)(aq)+S(2)O(3...

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  17. How would you account for the following : (i) Among lanthanoids , Ln...

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  18. How would you account for the following ? (i) Many of the transitio...

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  19. (a) Which metal in the first transition series (3d series) exhibits +...

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  20. How would you account for the following? (i) Transition metals exhibi...

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