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Give reason 'transition metals generally...

Give reason 'transition metals generally form coloured compound'.

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When a visible light falls on the metal ion, the unpaired electron of d subshell jumped from lower energy d-orbitals to higher energy d-orbitals by absorbing light of particular wavelength. Therefore the unabsorbed light is transmitted as complimentary colour.
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Assign reasons for each of the following: (i) Transition metals generally form coloured compounds. (ii) Manganese exhibits the highest oxidation state of +7 among the 3d-series of transition elements.

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

What are transition metals ?

Why are transition metal compounds coloured ?

Give two reasos why transition elements can form complexes.

Explain giving reasons : (i) Transition metals and their compounds generally exhibit a paramagnetic behaviour. (ii) The chemistry of actinoids is not so smooth as that of lanthanoids.

Give any two reasons for the formation of large number of complex compounds by transition metals.

Why are the compound of transition elements coloured?

Give Reason. Most of the transition metals have high melting point and boiling point.

SUBHASH PUBLICATION-THE 'd' - AND 'f' - BLOCK ELEMENTS -Question and Answer
  1. What happens when lanthanoids are heated in Carbon?

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  2. How lanthanoids reacts with water and dil. Acids?

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  3. What is mischmetall? Give its one use.

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  4. What is actinoid contraction? Why actinoid contraction is greater than...

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  5. Give reason: Actinoid contraction is greater from element to element t...

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  6. Give general oxidation state of actinoids. Why actinoids shows variabl...

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  7. Zr and Hf have almost identical atomic radii. Give reason.

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  8. Give reasons: Actinoids show variable oxidation states.

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  9. Give reasons: Zr and Hf have almost identical radii.

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  10. Give reason: Why Lanthanoids are less reactive than actinoids.

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  11. Out of the following elements identify the element which does not exhi...

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  12. Give Reason. Most of the transition metals have high melting point a...

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  13. Give Reason. Second ionisation enthalpy of copper is exceptionally h...

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  14. Give reason. Atomic size of 4d and 5d series elements are almost the...

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  15. Study of actinoid elements is difficult. Give two reasons.

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  16. Give reasons : Cerium (Ce) exhibits +4 oxidation state

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  17. Among Fe^(2+) and Fe^(3+) which is more stable? Give reason.

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  18. Give reason: Mn exhibits the higher oxidatoin state of +7 among 3d s...

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  19. Give reason: Cu^(2+) is paramagnetic and Cu^(+) is diamagnetic.

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  20. Give reason 'transition metals generally form coloured compound'.

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