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The magnetic moment for two complexes of empirical formula Ni(NH3)4 (NO3)2.2H2O is zero and 2.84 BM repectively. The second complex is not a neutral complex. The correct formula and geometry of the first complex is :

(1) [Ni(H2O)2(NO3)2].4NO3 = Tetrahedral
(2) [Ni(NH3)4] (NO3)2.2H2O = Tetrahedral
(3) [Ni(NH3)4](NO3)2.2H2O = Square planar
(4) [Ni(NH3)4(H2O)2](NO3)2 = Octahedral

Asked by Atulcaald 16th May 2018, 2:47 PM
Answered by Expert
Answer:
Ans. Option C
 

No.

Complex

Geometry

Oxidation state

Electronic configuration

Magnetic moment

(1)

[Ni(H2O)2(NO3)2].4NO3

Tetrahedral

Sp3

+2

d8

↑↓

↑↓

↑↓

 

 

2.83

 

(2)

[Ni(NH3)4] (NO3)2.2H2O

Tetrahedral

Sp3

+2

d8

↑↓

↑↓

↑↓

 

 

2.83

 

(3)

[Ni(NH3)4](NO3)2.2H2O

Square planar

dsp2

+2

d8

↑↓

↑↓

↑↓

↑↓

 

 

 

0

 

(4)

[Ni(NH3)4(H2O)2](NO3)2

Octahedral

Sp3d2

+2

d8

↑↓

↑↓

↑↓

 

 

2.83

 

Answered by Expert 17th May 2018, 4:40 PM
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