Coordination Compounds Test

Question 1
1 / -0

Which of the following species is not expected to be a ligand?

A
NO

B
NH₄⁺

C
NH₂CH₂CH₂NH₂

D
CO

Question 2
1 / -0

A complex cation is formed by Pt(in some oxidation state) with ligands (in proper number so that coordination number of Pt becomes six). Which of the following can be its correct IUPAC name?

A
Diammineethylenediaminedithiocyanato–S-platinum (II)

B
Diammineethylenediaminedithiocyanato–S-platinate (IV) ion.

C
Diammineethylenediaminedithiocyanato–S-platinum (IV) ion.

D
Diamminebis (ethylenediamine) dithiocyanato–S-platinum (IV) ion.

Question 3
1 / -0

Which of the following is not correctly matched?

A
Sodium(ethylenediaminetetraacetato)chromate (II) – Na₂[Cr(CH₃COO)⁴(en)]

B
Dichlorobis (ethane-1, 2diamine)coblat(III) ion – [Co(en)₂Cl₂]⁺

C
Tris(bipyridine) iron(II)on – [Fe (NH₄C₅ – C₅H₄N)₃]²⁺

D
Ammineaquadibromidocopper(II) – [Cu(H₂O)(NH₃)Br₂]

Question 4
1 / -0

The EAN of metal atoms in [Fe(CO₂)(NO⁺)₂] and Co₂(CO₈) respectively are:

A
34, 35

B
34, 36

C
36, 36

D
36, 35

Question 5
1 / -0

Match the complex ions listed in column-I with the characteristics listed in column-II using the codes given below.

A
a

B
b

C
c

D
d

Question 6
1 / -0

Which of the following statements is correct?
Note : NO is three electrons donor

A
[Cr(H₂O)₆]²⁺(aq) and [Cr(CN)+]^4- (aq) are high spin and low spin complexesrespectively but both have same number of unpaired electrons.

B
[V(NH₃)₆]³⁺ is inner orbital complex and paramagnetic with two unpaired electrons.

C
[Co(CN₆)]^4- is outer orbital complex and paramagnetic with three unpaired electrons.

D
[Mn(NO)₃(CO)] is square planar and diamagnetic.

Question 7
1 / -0

All the following complex ions are found to be paramagnetic
P : [FeF₆]^3- ; Q : [COF₆]^3- ; R : [V(H₂O)₆]³⁺ ; S : [Ti(H₂O)₆]³⁺
The correct order of their paramagnetic moment (spin only) is

A
P > Q > R > S

B
P < Q < R < S

C
P = Q = R = W

D
P > R > Q > S

Question 8
1 / -0

Among [NiCl₂(PPh₃)₂], [Ni(HDMG)₂] and [Ni(CO)₄] complexes the hybridisation statesof Ni atom are respectively.

A
sp³, sp³, dsp²

B
sp³, dsp², sp³

C
dsp², dsp², sp³

D
sp³, dsp², dsp²

Question 9
1 / -0

Amongst [Co(ox)₃]^3- , [CoF₆]^3- and [Co(NH₃)6]³⁺

A
[Co(ox)₃]^3- and [CoF₆]^3-are paramagnetic and [Co(NH₃)6]³⁺ is diamagnetic.

B
[Co(ox)₃]^3- and [Co(NH₃)6]³⁺ are paramagnetic and [CoF₆]^3- is diamagnetic.

C
[Co(ox)₃]^3- and [Co(NH₃)6]³⁺ are diamagnetic and [CoF₆]³ is paramagnetic.

D
[Co(NH₃)6]³⁺ and [CoF₆]^3- are paramagnetic and [Co(ox)₃]³⁺ is diamagnetic

Question 10
1 / -0

All the following complexes show decrease in their weights when placed in a magnetic
balance then the group of complexes having tetrahedral geometry is:
(i) Ni(CO)₄
(ii) K[AgF₄]
(iii) Na₂[Zn(CN)₄]
(iv) K₂[PlCl₄]
( v )[RhCl(PPh₃)₃]

A
(ii), (iii) and (v)

B
(i), (ii) and (iii)

C
(i), (iii) and (iv)

D
None of these

Question 11
1 / -0

The ‘brown ring’ formed at the junction of two layers in the test of nitrate is due to the formation of a complex ion, [Fe(H₂O)₅NO]²⁺. Which of the following statements are correct for this complex [u = 3.87 B.M.)
(i) Oxidation state of Fe is +1 and NO exists as NO+.
(ii) The complex ion is in octahedral geometry as attained by sp³d² hybridisation.
(iii) The complex is paramagnetic and has three unpaired electrons due to transfer of electron from NO to Fe²⁺.
(iv) The complex is in octahedral geometry as attained by d²sp³ hybridisation.
(v) The brown colour of the complex is attributed to d-d transition of electron.

A
(i), (ii) and (v)

B
(iii), (iv) and (v)

C
(i), (ii) and (iii)

D
(ii), (iii) and (v)

Question 12
1 / -0

Which of the following statements is most likely to be incorrect?

A
Ti(NO₃)₄is a colourless compound

B
[Cu(NCCH₃)₄]⁺ BF₄- is a colourlesscompound

C
[Cr(NH₃)₆]³⁺ 3Cl- is a coloured compound.

D
K₃[VF₆] is a colourless compound

Question 13
1 / -0

Identify the correct order of wavelength of light absorbed for the following complex ions.

A
III > I > IV >II

B
II > IV > I >III

C
III > I > II >IV

D
I > III > IV >II

Question 14
1 / -0

The possible geometric isomers shown by [Co(en)Br₂Cl₂]- is:

A
2

B
3

C
4

D
6

Question 15
1 / -0

The total number of isomers of the complex, [Co(NH₃)₄(NO₂) ₂(NO₃) complex is :

A
10

B
6

C
4

D
12

Question 16
1 / -0

Which of the following has both face-mer and optical isomers?

A
[Co(NH₃)₃(NO₃)₃]

B
[Co(ox)₃]^3-

C
[Co(gly)₃]

D
none of these

Question 17
1 / -0

Statement–1 : In complex [Cr(NH3)4 BrCl]Cl, the ‘spin only’ magnetic moment is close to 1.73 B.M.
Statement–2 : All known mononuclear complexes of chromium(III), irrespective of the strength of the ligand field, must have three unpaired electrons.

A
Statement- 1 is True, Statement- 2 is True; Statement- 2 is a correct explanationfor Statement- 1.

B
Statement- 1 is True, Statement- 2 is True; Statement- 2 is NOT a correct explanationfor Statement- 1.

C
Statement- 1 is True, Statement- 2 is False.

D
Statement- 1 is False, Statement- 2 is True.

Question 18
1 / -0

Statement–1 : The magnitude of for a given ligand increases as the charge on he metal ion increases.
Statement–2 : NH₃ is a weak field ligand towards Co²⁺ but acts as a strong field ligand towards Co³⁺.

A
Statement- 1 is True, Statement- 2 is True; Statement- 2 is a correct explanationfor Statement- 1.

B
Statement- 1 is True, Statement- 2 is True; Statement- 2 is NOT a correct explanationfor Statement 1.

C
Statement- 1 is True, Statement- 2 is False.

D
Statement- 1 is False, Statement- 2 is True.

Question 19
1 / -0

Statement–1 : tris (ethane-1, 2 – diamine)nickel(II) chloride is homoleptic outer orbital complex
Statement–2 : The geometry of Ni in tris (ethane-1, 2 – diamine)nickel(II) chloride is trigonal bipyramidal

A
Statement- 1 is True, Statement- 2 is True; Statement- 2 is a correct explanationfor Statement- 1.

B
Statement- 1 is True, Statement- 2 is True; Statement- 2 is NOT a correct explanationfor Statement 1.

C
Statement- 1 is True, Statement- 2 is False.

D
Statement- 1 is False, Statement- 2 is True.

Question 20
1 / -0

Statement–1 : [Ni (H₂O)₆]²⁺ is green but a solution of [Ni(CN)₄]^2- is colourless.
Statement–2 : Energy difference between d levels (i.e. ) for H2 O complex (paramagnetic) is in the visible region and that for the cyano complex (diamagnetic) is in the UV region

A
Statement- 1 is True, Statement- 2 is True; Statement- 2 is a correct explanationfor Statement- 1.

B
Statement- 1 is True, Statement- 2 is True; Statement- 2 is NOT a correct explanationfor Statement 1.

C
Statement- 1 is True, Statement- 2 is False.

D
Statement- 1 is False, Statement- 2 is True

Submit Test

Coordination Co...

Question 1

NO

NH4+

NH2CH2CH2NH2

CO

Question 2

Diammineethylenediaminedithiocyanato–S-platinum (II)

Diammineethylenediaminedithiocyanato–S-platinate (IV) ion.

Diammineethylenediaminedithiocyanato–S-platinum (IV) ion.

Diamminebis (ethylenediamine) dithiocyanato–S-platinum (IV) ion.

Question 3

Sodium(ethylenediaminetetraacetato)chromate (II) – Na2[Cr(CH3COO)4(en)]

Dichlorobis (ethane-1, 2diamine)coblat(III) ion – [Co(en)2Cl2]+

Tris(bipyridine) iron(II)on – [Fe (NH4C5 – C5H4N)3]2+

Ammineaquadibromidocopper(II) – [Cu(H2O)(NH3)Br2]

Question 4

34, 35

34, 36

36, 36

36, 35

Question 5

a

b

c

d

Question 6

[Cr(H2O)6]2+ (aq) and [Cr(CN)+]4- (aq) are high spin and low spin complexesrespectively but both have same number of unpaired electrons.

[V(NH3)6]3+ is inner orbital complex and paramagnetic with two unpaired electrons.

[Co(CN6)]4- is outer orbital complex and paramagnetic with three unpaired electrons.

[Mn(NO)3(CO)] is square planar and diamagnetic.

Question 7

P > Q > R > S

P < Q < R < S

P = Q = R = W

P > R > Q > S

Question 8

sp3, sp3, dsp2

sp3, dsp2, sp3

dsp2, dsp2, sp3

sp3, dsp2, dsp2

Question 9

[Co(ox)3]3- and [CoF6]3- are paramagnetic and [Co(NH3)6]3+ is diamagnetic.

[Co(ox)3]3- and [Co(NH3)6]3+ are paramagnetic and [CoF6]3- is diamagnetic.

[Co(ox)3]3- and [Co(NH3)6]3+ are diamagnetic and [CoF6]3 is paramagnetic.

[Co(NH3)6]3+ and [CoF6]3- are paramagnetic and [Co(ox)3]3+ is diamagnetic

Question 10

(ii), (iii) and (v)

(i), (ii) and (iii)

(i), (iii) and (iv)

None of these

Question 11

(i), (ii) and (v)

(iii), (iv) and (v)

(i), (ii) and (iii)

(ii), (iii) and (v)

Question 12

Ti(NO3)4 is a colourless compound

[Cu(NCCH3)4]+ BF4- is a colourlesscompound

[Cr(NH3)6]3+ 3Cl- is a coloured compound.

K3[VF6] is a colourless compound

Question 13

III > I > IV >II

II > IV > I >III

III > I > II >IV

I > III > IV >II

Question 14

2

3

4

6

Question 15

10

6

4

12

Question 16

[Co(NH3)3(NO3)3]

[Co(ox)3]3-

[Co(gly)3]

NH₄⁺

NH₂CH₂CH₂NH₂

Sodium(ethylenediaminetetraacetato)chromate (II) – Na₂[Cr(CH₃COO)⁴(en)]

Dichlorobis (ethane-1, 2diamine)coblat(III) ion – [Co(en)₂Cl₂]⁺

Tris(bipyridine) iron(II)on – [Fe (NH₄C₅ – C₅H₄N)₃]²⁺

Ammineaquadibromidocopper(II) – [Cu(H₂O)(NH₃)Br₂]

[Cr(H₂O)₆]²⁺(aq) and [Cr(CN)+]^4- (aq) are high spin and low spin complexesrespectively but both have same number of unpaired electrons.

[V(NH₃)₆]³⁺ is inner orbital complex and paramagnetic with two unpaired electrons.

[Co(CN₆)]^4- is outer orbital complex and paramagnetic with three unpaired electrons.

[Mn(NO)₃(CO)] is square planar and diamagnetic.

sp³, sp³, dsp²

sp³, dsp², sp³

dsp², dsp², sp³

sp³, dsp², dsp²

[Co(ox)₃]^3- and [CoF₆]^3-are paramagnetic and [Co(NH₃)6]³⁺ is diamagnetic.

[Co(ox)₃]^3- and [Co(NH₃)6]³⁺ are paramagnetic and [CoF₆]^3- is diamagnetic.

[Co(ox)₃]^3- and [Co(NH₃)6]³⁺ are diamagnetic and [CoF₆]³ is paramagnetic.

[Co(NH₃)6]³⁺ and [CoF₆]^3- are paramagnetic and [Co(ox)₃]³⁺ is diamagnetic

Ti(NO₃)₄is a colourless compound

[Cu(NCCH₃)₄]⁺ BF₄- is a colourlesscompound

[Cr(NH₃)₆]³⁺ 3Cl- is a coloured compound.

K₃[VF₆] is a colourless compound

[Co(NH₃)₃(NO₃)₃]

[Co(ox)₃]^3-

[Co(gly)₃]