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[Fe(CN)(6)]^(4-) and [Fe(H(2)O)(6)]^(2+)...

`[Fe(CN)_(6)]^(4-)` and `[Fe(H_(2)O)_(6)]^(2+)` are of different colours in dilute solutions why?

A

`CN^(-)` is a strong field ligand and `H_(2)O` is a weak field ligand hence magnitude of CFSE is different

B

both `CN^(-)` and `H_(2)O` absorb same wavelength of energy

C

complexes of weak field ligands are generally colourless

D

the sizes of `CN^(-)` and `H_(2)O` are different hence their colours are also different .

Text Solution

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The correct Answer is:
B
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NCERT FINGERTIPS-COORDINATION COMPOUNDS -Bonding In Coordination Compounds
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  2. Match the column I with column II and mark the appropriate choice .

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  3. Electronic configuration of [Cu(NH(3))(6)]^(2+) on the basis of crysta...

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  4. Which of the following energy level diagram for [FeF(6)]^(3-) is corre...

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  5. In [NiCl(4)]^(2-) ,the number of unparied electron is

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  6. Which of the following shell from an octahedral complex

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  7. The value of 'spin only' magnetic moment for one of the following conf...

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  8. Which of the following statements is/are correct ? (i) In octahedra...

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  9. [FeF(6)]^(3-) is paramagnetic due to presence of unpaired electrons in...

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  10. [Co(Cr(2)O(4))(3)]^(3-) is a

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  11. What are the correct oxidation state , coordination number , configura...

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  12. Which of the following statements is correct about [Co(H(2)O)(6)]^(2+)...

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  13. The increasing order of the crystal field splitting power of some comm...

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  14. What is crystal field splitting energy? How does the magnitude of tria...

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  15. Why are low spin tetrahedral complexes not formed ?

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  16. A substance appears coloured because

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  17. Match the complex ions given in column I with their colour given in co...

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  18. CuSO(4).5H(2)O is blue in colour while CuSO(4) is colourless. Why ?

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  19. [Fe(CN)(6)]^(4-) and [Fe(H(2)O)(6)]^(2+) are of different colours in d...

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  20. Explain why hexacayano complexe of metals in their +2 oxidation state ...

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