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An aqueous pink solution of cobalt (II) ...

An aqueous pink solution of cobalt (II) chloride changes to deep blue on addition of excess of HCI. This is because___.

A

`[Co(H_2O)_6]^(2+)` is transformed into `[CoCl_6]^(4-)`

B

`[Co(H_2O)_6]^(2+)` is transformed into `[CoCl_6]^(2-)`

C

tetrahedral complexes have smaller crystal field splitting than octahedral complexes.

D

tetrahedral complexes have larger crystal field splitting than octahedral complex.

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MODERN PUBLICATION-COORDINATION COMPOUNDS-EXERCISE
  1. Is the iupac name of compound is correct ? [Co (H2O)5 CO3]Cl pentawat...

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  2. Is the iupac name of compound is correct ? K3[Fe (SCN)5 NO] Potassium...

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  3. An aqueous pink solution of cobalt (II) chloride changes to deep blue ...

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  4. Which of the following complexes are homoleptic ?

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  5. Which of the following complexes are heteroleptic ?

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  6. Identify the optically active compounds from the following :

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  7. Is the iupac name of compound is correct ? K3[Al (o x)3 ] Potassium t...

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  8. Is the iupac name of compound is correct ? [Co NO2 (NH3)5 ]SO4 pentaa...

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  9. Is the iupac name of compound is correct ? [Co (en)3 ]2(SO4)3 triseth...

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  10. Match the coordination compounds given in Column I with the central me...

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  11. Match the complex ions given in Column I with the hybridisation and nu...

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  12. Match the complex species given in Column I with the possible isomeris...

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  13. Match the compounds given in Column I with the oxidation state of coba...

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  14. Name the type of isomerism exhibited by the following pair of isomers ...

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  15. Write the number of unpaired electron in given compound : [Cr(H2O)6]Cl...

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  16. Assertion : Linkage isomerism arises in coordination compounds contain...

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  17. Assertion : Complexes of MX6 and MX5L type (X and L are unidentate) do...

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  18. Assertion : ([Fe(CN)6]^(3-) ion shows magnetic moment corresponding to...

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  19. Give one example of linkage isomer.

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  20. Why does NH3 readily form complexes but NH4^(+) does not ?

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