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The magnetic behaviour of a complex can ...

The magnetic behaviour of a complex can be expained on the basis of VB theory `[CO(NH_3)_6)]^(3+)` is a diamagnetic complex and `[CoF_6]^3-` is a paramagnetic complex.Substantiate the above statement using VB theory.

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F^-. is a weak ligand and is unable to pair up the unpaired electrons of the 3 d orbitais and .NH_3., is a strong field ligand and as it approaches the metal ton, the electrons must pair up. Therefore .[CoF_6]^3-. contains unpaired electrons and hence it is paramagnetic but .[Co(NH_3)_6]^3+. is not.
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V PUBLICATION-COORDINATION COMPOUNDS-QUESTION BANK
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  2. "Strength of the ligand can affect the magnetic property of the coordi...

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  3. The magnetic behaviour of a complex can be expained on the basis of VB...

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  5. What are homoleptic carbonyls? Give some examples:

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  6. How does the metal carbonyls gains stability although CO. is a weak d...

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  7. The following are two coordination compound: I.[Co(NH3)6]CI3 II. Na3 [...

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  8. What is meant by chelate effect? Give an example.

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  9. Briefly explain the concept of -Crystal field theory.

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  10. What is understood by the generalisation- Magnetic criteria of the bo...

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  13. Tetrahedral complexés, do' nọt show geometrical isomerism. Why?

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  14. Which type of isomerism' is shown' by-the following complex? (i) '[Co(...

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  15. Arrange the following complexes in order of increasing electrical cond...

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  16. A coordination compound has the formula COCI3.4NH3. It does not libera...

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  17. The values of dissociation constants, of (Cu(NH3)4]^2+ and [Co(NH3)6]^...

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  18. Why only transition metals are known to form 'pi' complexes?

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  19. How many coordination sites are there in ethylenediamine figure

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  20. Give one example for chelate complex?

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