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Why is [NiCl(4)]^(2-) paramagnetic while...

Why is `[NiCl_(4)]^(2-)` paramagnetic while `[Ni(CN)_(4)]^(2-)` is diamagnetic ?

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Verified by Experts

`[NiCl_(4)]^(2-)` uses outer orbital in hybridisation `(sp^(3))`. It has two unpaired electrons as shown below:
Config. of `Ni^(2+)` ion
NiCn
`[Ni(CN)_(4)]^(2-)` uses inner orbital in hybridisation `(dsp^(2))`. It has no unpaired electrons and is diamagnetic.
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U-LIKE SERIES-COORDINATION COMPOUNDS-LONG ANSWER QUESTIONS-I (3 marks each)
  1. Write the IUPAC name of the following complex : [Co(NH(3))(5)(CO(3))]C...

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  2. What type of isomerism is shown by the complex [Co(NH(3))(5)(SCN)]^(2+...

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  3. Why is [NiCl(4)]^(2-) paramagnetic while [Ni(CN)(4)]^(2-) is diamagnet...

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  4. Why are low spin tetrahedral complexes rarely observed ?

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  5. Define crystal field splitting energy. On the basis of crystal field t...

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  6. [Ni(CN)(4)]^(2-) is colourless whereas [Ni(H(2)O)(6))^(2+) is green. W...

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  7. For the complex [Fe(CN)(6)]^(3-), write the hybridisation type, magnet...

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  8. Draw one of the geometrical isomers of the complex [Pt(en)(2)Cl(2)]^(2...

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  9. For the complex [Fe(H(2)O)(6)]^(3+), write the hybridisation, magnetic...

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  10. Draw one of the geometrical isomers of the complex [Pt(en)(2)Cl(2)]^(2...

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  11. For the complex [Fe(CO)(5)], write the hybridisation, magnetic charact...

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  12. Define crystal field splitting energy.

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  13. What type of isomerism is shown by the complex [Cr(H(2)O)(6)]Cl(3) ?

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  14. On the basis of crystal field theory, write the electronic configurati...

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  15. Write the hybridisation and shape of [CoF(6)]^(3-). [Atomic number of ...

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  16. Draw the geometrical isomers of complex [Pt(NH(3))(2)Cl(2)].

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  17. On the basis of crystal field theory, write the electronic configurati...

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  18. Write the hybridisation and magnetic behaviour of the complex [Ni(CO)(...

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  19. Draw the geometrical isomers of complex [Pt(en)(2)Cl(2)]^(2+) .

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  20. On the basis of crystal field theory, write the electronic configurati...

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