Coordination Compounds Test

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Coordination Compounds Test - 14

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Weekly Quiz Competition

Question 1
4 / -1

In which of the following octahedral complexes of Co (atomic number 27) will be magnitude of ∆_O be the highest?

A
[Co(CN)₆]^3-

B
[Co(C₂ O₄)₃ ]^3-

C
[Co(H₂O)₆]³⁺

D
[Co(NH₃)₆]³⁺
Question 2
4 / -1

The number of unpaired electrons calculated in [Co(NH₃)₆ ]³⁺ and [Co(F₆ )]^3- are

A
4 and 4

B
0 and 2

C
2 and 4

D
0 and 4

Solution
Question 3
4 / -1

An octahedral complex is formed when hybrid orbitals of the following type are involved

A
sp³

B
dsp²

C
d ²sp³

D
sp²d ²
Question 4
4 / -1

Which of the following shell, form only an outer octahedral complex ?

A
d ⁴

B
d ⁸

C
d ⁶

D
None of these
Question 5
4 / -1

[Ni(CN)₄ ]^2- , [MnBr₄ ]^2- and [CoF₆ ]^3- , geometry, hybridisation and magnetic moment of the ions respectively, are

A
tetrahedral, square planar, octahedral : sp³ , dsp² , sp³ d ² : 5.9, 0, 4.9

B
tetrahedral, square planar, octahedral : dsp² , sp³ , sp³ d ² : 0, 5.9, 4.9

C
square planar, tetrahedral, octahedral : dsp², sp³ , d ² sp³: 5.9, 4.9, 0

D
square planar, tetrahedral, octahedral : dsp² , sp³ , sp³d ² : 0, 5.9, 4.9
Question 6
4 / -1

The reaction, [Fe(CNS)₆ ]^3- → [FeF₆ ]^3- takes place with

A
decrease in magnetic moment

B
increase in magnetic moment

C
decrease in coordination number

D
increase in coordination number
Question 7
4 / -1

The number of unpaired electrons in the square planar [Pt(CN)₄ ]^2- ion is

A
2

B
1

C
0

D
3
Question 8
4 / -1

Which has maximum paramagnetic character ?

A
[Fe(CN)₆]^4-

B
[Cu(H₂O)₄]²⁺

C
[Cu(NH₃ )₄]²⁺

D
[Mn(H₂O)₆]²⁺
Question 9
4 / -1

In which of the following complex ion, the central metal ion is in a state of sp³ d ² hybridisation ?

A
[CoF₆)]^3-

B
[Co(NH₃)₆]³⁺

C
[Fe(CN)₆]^3-

D
[Cr(NH₃)₆]³⁺
Question 10
4 / -1

Which one of the following has a square planar geometry ?
(Atomic Number of Fe = 26, Co = 27, Ni = 28, Pt = 78)

A
[CoCl₄]^2-

B
[FeCl₄]^2-

C
[NiCl₄]^2-

D
[PtCl₄]^2-

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Coordination Compounds Test - 14

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Coordination Compounds Test - 14

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Question 1

[Co(CN)6]3-

[Co(C2 O4)3 ]3-

[Co(H2O)6]3+

[Co(NH3)6]3+

Question 2

4 and 4

0 and 2

2 and 4

0 and 4

Solution

Question 3

sp3

dsp2

d 2sp3

sp2d 2

Question 4

d 4

d 8

d 6

None of these

Question 5

tetrahedral, square planar, octahedral : sp3 , dsp2 , sp3 d 2 : 5.9, 0, 4.9

tetrahedral, square planar, octahedral : dsp2 , sp3 , sp3 d 2 : 0, 5.9, 4.9

square planar, tetrahedral, octahedral : dsp2, sp3 , d 2 sp3: 5.9, 4.9, 0

square planar, tetrahedral, octahedral : dsp2 , sp3 , sp3d 2 : 0, 5.9, 4.9

Question 6

decrease in magnetic moment

increase in magnetic moment

decrease in coordination number

increase in coordination number

Question 7

2

1

0

3

Question 8

[Fe(CN)6]4-

[Cu(H2O)4]2+

[Cu(NH3 )4]2+

[Mn(H2O)6]2+

Question 9

[CoF6)]3-

[Co(NH3)6]3+

[Fe(CN)6]3-

[Cr(NH3)6]3+

Question 10

[CoCl4]2-

[FeCl4]2-

[NiCl4]2-

[PtCl4]2-

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[Co(CN)₆]^3-

[Co(C₂ O₄)₃ ]^3-

[Co(H₂O)₆]³⁺

[Co(NH₃)₆]³⁺

sp³

dsp²

d ²sp³

sp²d ²

d ⁴

d ⁸

d ⁶

tetrahedral, square planar, octahedral : sp³ , dsp² , sp³ d ² : 5.9, 0, 4.9

tetrahedral, square planar, octahedral : dsp² , sp³ , sp³ d ² : 0, 5.9, 4.9

square planar, tetrahedral, octahedral : dsp², sp³ , d ² sp³: 5.9, 4.9, 0

square planar, tetrahedral, octahedral : dsp² , sp³ , sp³d ² : 0, 5.9, 4.9

[Fe(CN)₆]^4-

[Cu(H₂O)₄]²⁺

[Cu(NH₃ )₄]²⁺

[Mn(H₂O)₆]²⁺

[CoF₆)]^3-

[Co(NH₃)₆]³⁺

[Fe(CN)₆]^3-

[Cr(NH₃)₆]³⁺

[CoCl₄]^2-

[FeCl₄]^2-

[NiCl₄]^2-

[PtCl₄]^2-