Coordination Compounds Test

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Coordination Compounds Test - 24

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Weekly Quiz Competition

Question 1
4 / -1

Among [Fe(H₂O)₆]³⁺ ,[Fe(CN)₆ ]^3- , [Fe(Cl)₆]^3- species, the hybridisation state of the Fe atom are, respectively

A
d ² sp³, d ² sp³, sp³ d ²

B
sp³ d ², d ² sp³, d ² sp³

C
sp³ d ², d ² sp³, sp³d ²

D
None of the above
Question 2
4 / -1

Consider the following complex ions, P,Q and R.
P = [FeF₆]^3- ,Q = [V(H₂O)₆]²⁺ and
R = [Fe(H₂O)₆]²⁺ .
The correct order of the complex ions, according to their spin-only magnetic moment values(in BM is)

A
R < Q < P

B
Q < R < P

C
R < P < Q

D
Q < P < R

Solution
Question 3
4 / -1

Among the following complexes (K-P), K₃[Fe(CN)₆ ](K),
[Co(NH₃)₆]Cl₃(L), Na₃[Co(ox)₃ ](M)
[Ni(H₂O)₆]Cl₂(N), K₂ [Pt(CN)₄](O) and
[Zn(H₂O)₆ ](NO₃ )₂ (P) the diamagnetic complexes are

A
K , L , M , N

B
K , M , O , P

C
L , M , O , P

D
L , M , N , O
Question 4
4 / -1

Among the ligands NH₃, en, CN^- and CO, the correct order of their increasing field strength, is

A
CO < NH₃ < en < CN^-

B
NH₃ < en < CN^- < CO

C
CN^- < NH₃ < CO < en

D
en < CN^- < NH₃ < CO
Question 5
4 / -1

Which one of the following complex is an outer orbital complex?
(Atomic number of Mn = 25, Fe = 24, Co = 27, Ni = 28)

A
[Fe(CN)₆]^4-

B
[Mn(CN)₆]^4-

C
[Co(NH₃ )₆]³⁺

D
[Ni(NH₃ )₆]²⁺
Question 6
4 / -1

Show the coordination number of the metal ion, its oxidation number, the number of electrons in d-orbitals and the number of unpaired electrons in d-orbitals respectively in complex [Co(H₂O)₄SO₃]Cl.

A
6, 3, 6, 4

B
6, 3, 6, 0

C
5, 3, 6, 4

D
5, 3, 6, 0

Solution
Question 7
4 / -1

Hybridisation, shape and magnetic moment of K₃ [Co(CO₃ )₃] is

A
d ² sp³ , octahedral, 4.9 BM

B
sp³d ², octahedral, 4.9 BM

C
dsp² , square planar, 4.9 BM

D
sp³, tetrahedral, 4.9 BM
Question 8
4 / -1

The correct order of magnetic moments (spin only values in BM) among the following is
(atomic number of Mn = 25, Fe = 26, Co = 27)

A
[MnCl₄]^2- > [CoCl₄]^2- > [Fe(CN)₆]^4-

B
[MnCl₄]^2- > [Fe(CN)₆]^4- > [CoCl₄]^2-

C
[Fe(CN)₆]^4- > [MnCl₄]^2- > [CoCl₄]^2-

D
[Fe(CN)₆]^4- > [CoCl₄]^2- > [MnCl₄]^2-

Solution
Question 9
4 / -1

The value of the 'spin only' magnetic moment for one of the following configurations is 2.84 BM. The correct one is

A
d ⁵ (in strong ligand field)

B
d ³ (in weak as well as strong ligand fields)

C
d ⁴ (in weak ligand field)

D
d ⁴ (in strong ligand field)
Question 10
4 / -1

Which one of the following is not expected to show paramagnetism ?

A
[Ni (H₂O)₆]²⁺

B
Ni (CO)₄

C
[Ni (NH₃)₄]²⁺

D
[Co(NH₃)₆]²⁺

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Coordination Compounds Test - 24

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Question 1

d 2 sp3, d 2 sp3, sp3 d 2

sp3 d 2, d 2 sp3, d 2 sp3

sp3 d 2, d 2 sp3, sp3d 2

None of the above

Question 2

R < Q < P

Q < R < P

R < P < Q

Q < P < R

Solution

Question 3

K , L , M , N

K , M , O , P

L , M , O , P

L , M , N , O

Question 4

CO < NH3 < en < CN-

NH3 < en < CN- < CO

CN- < NH3 < CO < en

en < CN- < NH3 < CO

Question 5

[Fe(CN)6]4-

[Mn(CN)6]4-

[Co(NH3 )6]3+

[Ni(NH3 )6]2+

Question 6

6, 3, 6, 4

6, 3, 6, 0

5, 3, 6, 4

5, 3, 6, 0

Solution

Question 7

d 2 sp3 , octahedral, 4.9 BM

sp3d 2, octahedral, 4.9 BM

dsp2 , square planar, 4.9 BM

sp3, tetrahedral, 4.9 BM

Question 8

[MnCl4]2- > [CoCl4]2- > [Fe(CN)6]4-

[MnCl4]2- > [Fe(CN)6]4- > [CoCl4]2-

[Fe(CN)6]4- > [MnCl4]2- > [CoCl4]2-

[Fe(CN)6]4- > [CoCl4]2- > [MnCl4]2-

Solution

Question 9

d 5 (in strong ligand field)

d 3 (in weak as well as strong ligand fields)

d 4 (in weak ligand field)

d 4 (in strong ligand field)

Question 10

[Ni (H2O)6]2+

Ni (CO)4

[Ni (NH3)4]2+

[Co(NH3)6]2+

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d ² sp³, d ² sp³, sp³ d ²

sp³ d ², d ² sp³, d ² sp³

sp³ d ², d ² sp³, sp³d ²

CO < NH₃ < en < CN^-

NH₃ < en < CN^- < CO

CN^- < NH₃ < CO < en

en < CN^- < NH₃ < CO

[Fe(CN)₆]^4-

[Mn(CN)₆]^4-

[Co(NH₃ )₆]³⁺

[Ni(NH₃ )₆]²⁺

d ² sp³ , octahedral, 4.9 BM

sp³d ², octahedral, 4.9 BM

dsp² , square planar, 4.9 BM

sp³, tetrahedral, 4.9 BM

[MnCl₄]^2- > [CoCl₄]^2- > [Fe(CN)₆]^4-

[MnCl₄]^2- > [Fe(CN)₆]^4- > [CoCl₄]^2-

[Fe(CN)₆]^4- > [MnCl₄]^2- > [CoCl₄]^2-

[Fe(CN)₆]^4- > [CoCl₄]^2- > [MnCl₄]^2-

d ⁵ (in strong ligand field)

d ³ (in weak as well as strong ligand fields)

d ⁴ (in weak ligand field)

d ⁴ (in strong ligand field)

[Ni (H₂O)₆]²⁺

Ni (CO)₄

[Ni (NH₃)₄]²⁺

[Co(NH₃)₆]²⁺