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In the complex [Ni(H2O)2 (NH3)4]^(2+) t...

In the complex `[Ni(H_2O)_2 (NH_3)_4]^(2+)` the number of unpaired electrons is

A

0

B

1

C

3

D

2

Text Solution

Verified by Experts

The correct Answer is:
D
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Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired electrons are paramagnetic and paramagnetic character increases as the number of unpaired electrons increases. Magnetic moment of a complex can be determined experimentally and by using formula sqrt(n(n+2)) and we can determine the number of unpaired electrons in it. This information is important in writing electronic structure of complex which in turn also useful in deciding the geometry of complex. There are four complexes of Ni. Select the complex/es which will be attracted by magnetic field. underset((I))([Ni(CN)_(4)]^(2-))" "underset((II))([NiCl_(4)]^(2-))" "underset((II))(Ni(CO)_(4))" "underset((IV))([Ni(H_(2)O)_(6)]^(2+))

Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired electrons are paramagnetic and paramagnetic character increases as the number of unpaired electrons increases. Magnetic moment of a complex can be determined experimentally and by using formula sqrt(n(n+2)) and we can determine the number of unpaired electrons in it. This information is important in writing electronic structure of complex which in turn also useful in deciding the geometry of complex. Which of the following are diamagnetic ? 1) K_(4)[Fe(CN)_(6)] 2) K_(3)[Cr(CN)_(6)] 3) K_(3)[Co(CN)_(6)] 4) K_(2)[Ni(CN)_(4)]

Valence bond theory successfully explains the magnetic behaviour of complexes. The substances which contains unpaired electrons are paramagnetic and paramagnetic character increases as the number of unpaired electrons increases. Magnetic moment of a complex can be determined experimentally and by using formula sqrt(n(n+2)) and we can determine the number of unpaired electrons in it. This information is important in writing electronic structure of complex which in turn also useful in deciding the geometry of complex. The magnetic moment of complexes given below are in the order : {:(Ni(CO)_(4),[Mn(CN)_(6)]),("(I)","(II)"),([Cr(NH_(3))_(6)]^(3+),[CoF_(6)]^(3+)),("(I)","(II)"):}

AAKASH SERIES-COMPLEX COMPOUNDS -Objective Exercise-1
  1. The hybridisation of nickel in tetracarbonyl nickel is

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  2. The oxidation state of the metal forming the complex K2[PtCl6] is

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  3. In the complex [Ni(H2O)2 (NH3)4]^(2+) the number of unpaired electron...

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  4. The correct order of increasing field strengths

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  5. In which of the following octahedral complexes of cobalt (atomic numbe...

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  6. According to crystal field theory, the M-L bond in a complex is

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  7. The number of unpaired electron in [Pt(CN)4]^(2-) ion having square pl...

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  8. Which one of the following is square planar in structure and has diama...

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  9. [Cr(H2O)6]Cl3 and [Cr(H2O)4Cl2]Cl. H2O are hydrate isomers. Their colo...

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  10. Which of the following does not has an optical isomer?

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  11. Which of the following has an optical isomer ?

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  12. Which of the following pairs represents linkage isomers ?

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  13. Which of the following will exhibit geometrical isomerism? (M stands f...

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  14. The ionization isomer of [Cr(H2O)4 Cl(NO2)]Cl is given as

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  15. Ionisation isomerism is possible with

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  16. [PtBrCl(NO(2))(NH(3))] I on ionisation gives the ion

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  17. Structural differences are main in the following isomers (A) ionisat...

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  18. Which of the following is not an example of the isomerism in complex c...

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  19. The complex ion [Co(en)2Cl2]^(+) exhibits

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  20. Optical isomers differ in

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