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Nickel (Z=28) combines with a uninegativ...

Nickel `(Z=28)` combines with a uninegative monodentate ligand `X^(-)` to form a paramagnetic complex `[NiX_4]^(2-)`. The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively:

A

one, tetrahedral

B

two, tetrahedral

C

one, square planar

D

two, square planar.

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is the correct answer because out of the three Cl atoms present, only one represents primary valency (ionisable) .
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DINESH PUBLICATION-CO-ORDINATION COMPOUNDS -Select the correct answers
  1. The coordination number of a central metal atom in a complex is determ...

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  2. The correct order of magnetic moments (spin values in B.M.) among is:

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  3. Nickel (Z=28) combines with a uninegative monodentate ligand X^(-) to ...

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  4. In Fe(CO)5, the Fe-C bond possesses:

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  5. In which of the following octahedral complexes of Co (at. no. 27), wil...

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  6. The co-ordination number and the oxidation state of the element E in t...

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  7. Which of the following complexes will give a pair of enantiomers ?

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  8. Which of the following pairs represents linkage isomers ?

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  9. Which of the following exists as an optical isomer ?

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  10. A solution containing 2.675 g of CoCl(3).6NH(3) (molar mass = 267.5 g ...

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  11. The IUPAC name of the K(2)[Ni(CN)(4)] is :

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  12. The oxidation number , d-orbital occupation and co-ordination number o...

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  13. Which of the following facts about the complex [Cr(NH(3))(6)]Cl(3) is...

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  14. The correct statement with respect to the complexes Ni(CO)(4) and [Ni(...

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  15. The complex with maximum magnetic in the following is :

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  16. Which among the following will be named as dibromobis (ethane-1,2-diam...

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  17. Which of the following complex species is not expected to exhibit opti...

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  18. d^(2)sp(3) hybridisation of the atomic orbital gives :

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  19. Which one of the following forms with an excess of CN^(-) (Cyanide) a ...

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  20. Which of the following has a regular tetrahedral structure ?

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