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[Fe(CN)6]^(4-) and Fe(H2 O)6]^(2+) are d...

`[Fe(CN)_6]^(4-)` and `Fe(H_2 O)_6]^(2+)` are different colours in dilute solutions . Why ?

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In both the complexes, Fe is in +2 state with the configuration `3d^6`, i.e., it has four unpaired electrons. In the presence of weak `H_2 O` ligand, they do not pair up. In the presence of strong CN ligand, they pair up leaving no unpaired electron. Due to the difference in the number of unpaired electrons, they have different colours.
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  2. Give the IUPAC name of [CoCl2 (NH3)4] Cl. Draw cis and trans isomers ...

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  3. (a) What is coordination isomerism? Give an example.

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  4. Write the IUPAC name of the complex: [Ag (NH3)2] [Ag(CN)2] .

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  5. For [Co (en)3] Cl3 : Give the IUPAC name.

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  6. For (Co(en)(3))Cl(3). Give the coordination number of the central me...

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  7. For [Co (en)3] Cl3 : What type of stereoisomerism does it exhibit ?

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  8. For the given complex [Co(NH(3))(5)Br]SO(4), write the IUPAC name and ...

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  9. Which set of d-orbitals of a metal atom/ion experience more repulsion ...

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  10. Give the IUPAC name of [Ti(H(2)O)(6)]^(3+). Draw cis and trans isomers...

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  11. Mention the geometry and magentic property of tetracarbonylnickel comp...

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  12. [Fe(CN)6]^(4-) and Fe(H2 O)6]^(2+) are different colours in dilute sol...

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  13. The oxidation number of cobalt in K[Co(CO)4] is : (i) + 1 (ii) + 3 (ii...

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  14. Write the IUPAC name of the complex [Cr(NH3)4 Cl2] Cl.

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  15. What type of isomerism is exhibited by the complex [Co(en)3]^(3+) ? (...

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  16. Why is [NiCl4]^(2-) paramagnetic but [Ni(CO)4] is diamagnetic ? (...

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  17. How is double salt different from a complex ?

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  18. Write IUPAC names of the following : (i) K3 [Fe(C2 O4)3] (ii) [Pt...

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