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A solution of [Ni(H(2)O)(6)]^(2+) is gre...

A solution of `[Ni(H_(2)O)_(6)]^(2+)` is green but a solution of `[Ni(CN)_(4)]^(2-)` is colourless Explain.

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There are two unparired electrons in `(Ni(H_2O)-6]^(2+)` which can be excited to higher energy orbitals by absorbing visible light. On thhe other hand, `[Ni(CN)_4]^(2-)` has no unpaired electrons.
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Assertion A solution of [Ni(H_(2)O)_(6)]^(2+) is green but a solution of [Ni(CN)_(4)]^(2+) is colourless Reason [Ni(CN)_(4)]^(2+) is square planar complex .

(i) What type of isomerism is shown by the complex [Co(NH_(3))_(6)] [Cr(CN)_(6))] ? (ii) Why a solution of [Ni(H_(2)O)_(6)^(2+) is given while a solution of [No(CN)_(4)]^(2-) colourless ? (At. No. of Ni = 28) (iii) Write the IUPAC name of the following complex : [Co(NH_(3))_(5) (CO_(3))] Cl

The complex ion [Ni(CN)_4]^(2-) is :

The IUPAC name of [Ni(CN)_(4)]^(2-) is

The hexaaqua complex [Ni(H_(2)O)_(6)]^(2+) is green, whereas the corresponding ammonia complex [Ni(NH_(3))_(6)]^(2+) is violet. Explain.

[Ti(H_2O)_6]^(3+) is coloured while [Sc(H_2O)_6]^(3+) is colourless . Explain.

Assertion: [Ti(H_(2)O)_(6)]^(4+) is coloured while [Sc(H_(2)O)_(6)]^(3+) is colourless. Reason: d-d transition is not possible in [Sc(H_(2)O)_(6)]^(3+) .

Explain the following giving reasons [NiCI_(4)]^(2-) is tetrahedral and paramagnetic whereas [Ni(CN)_(4)]^(2-) is square plannar and dimagnetic.

(a). Why Mn^(2+) compounds are more stable than Fe^(2+) towards oxidation to their +3 state? (b). Calculate the magnetic moment of V^(3+) ion. (c). [Ti(H_2O)_6_^(3+) gives violet coloured aqueous solution but [Mg(H_2O)_6]^(2+) solution is colourless. (d). [Ti(H_2O)_6]^(3+) is coloured whereas [Sc(H_2O)_6]^(3+) is colourless. Why?

[Cr(NH_3)_6]^(3+) is paramagnetic while [Ni(CN)_4]^(2-) is diamagnetic. Explain why?

ICSE-COORDINATION COMPOUNDS -ISC EXAMINATION QUESTION (PART- II DESCRIPTIVE QUESTIONS)
  1. A solution of [Ni(H(2)O)(6)]^(2+) is green but a solution of [Ni(CN)(4...

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  2. Name the type of isomerism shown by the pair of co-ordination compound...

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  3. Name the type of isomerism shown by the pair of co-ordination compound...

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  4. Name the type of isomerism shown by the following pair of compounds : ...

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  5. Draw the geometrical isomers exhibited by the compound [PtCl2(NH3)2]

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  6. Write the formulae of the following coordination compound tetracarbony...

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  7. Write the formulae of the following coordination compound potassium di...

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  8. Give the IUPAC names for the following : (i) Na(3)[AIF(6)] (ii) [C...

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  9. Using IUPAC norms write the systematic names of the [Co(NH3)6]Cl3

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  10. For the complex ion of [Fe(CN)6]^(3-) : Show the hybridization diagr...

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  11. For the complex ion of [Fe(CN)6]^(3-) : Is it an inner orbital compl...

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  12. For the complex ion of [Fe(CN)6]^(3-) : State its magnetic property.

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  13. Write the formulae of the following coordination compound Potassium te...

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  14. Write the formulae of the following coordination compounds : triamm...

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  15. [CoF6]^(3-) is a coordination complex ion. What is the oxidation numb...

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  16. [CoF6]^(3-) is a coordination complex ion. How many unpaired electro...

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  17. [CoF6]^(3-) is a coordination complex ion. State the magnetic behavio...

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  18. [CoF6]^(3-) is a coordination complex ion. Give the I.U.P.A.C. name o...

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  19. Draw the structural isomer of [Co(NH3)5NO2]Cl2 and name the type of is...

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  20. Give the IUPAC names of the following coordina tion compounds : K2[Z...

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  21. Give the IUPAC names of the following compound [Co(NH3)5CO3]Cl

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