Coordination Compounds Test

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Coordination Compounds Test - 4

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Weekly Quiz Competition

Question 1
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Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q. According to IUPAC nomenclature, sodium nitroprusside is named as

A
sodium nitroferricyanide

B
sodium nitroferrocyanide

C
sodium pentacyanonitrosyliumferrate (II)

D
sodium pentacyanonitrosylferrate (III)

Solution

IUPAC name of sodium nitroprusside Na₂ [Fe(CN)₅ NO] is sodium pentacyanonitrosyl ferrate (III) because in it NO is neutral ligand and the oxidation number of Fe is +3. Which is calculated as Na₂ [Fe(CN)₅ NO]
2 ×(+1) + x +5 ×(−1)+1 ×0 = 0
2 + x - 5 = 0
x - 3 = 0
x = + 3
Question 2
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The formula of the complex hexamminecobalt (III) chloride sulphate is

A
[Co(NH₃ )₆ ]CISO₄

B
[Co(NH₃ )₆ CI]SO₄

C
[Co(NH₃ )₆ CISO₄ ]

D
None of these

Solution

The formula of complex hexamminecobalt (III) chloride sulphate is [Co(NH₃ )₆ ]CISO₄ .
Question 3
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The IUPAC name of the compound [Cr(NH₃ )₅ (NCS)][ZnCI₄ ] is

A
pentammine isothiocyanatochromium (III) tetrachlorozincate (II)

B
pentaammine thiocyanatochromium (III) tetrachlorozincate (II)

C
pentammine isothiocyanatochromium (0) tetrachlorozincate (IV)

D
pentammine thiocyanatochromium (0) tetrachlorozincate (IV

Solution

The lUPAC name of [Cr(NH₃ )₅ (NCS)][ZnCI₄ ] is pentammine isothiocyanatochromium (III) tetrachlorozincate (II).
Question 4
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The IUPAC name of the complex [(CO)₅ Mn - Mn(CO)₅ ] is

A
bis (pentacarbonyl dimanganese)

B
decacarbonyldimanganate (0).

C
bis (pentracarbonylmanganese) (0)

D
bis (pentacarbonyldimanganate) (ll)

Solution

Decacarbonyldimanganese (0), Mn₂ (CO)₁₀ , is made up of two square pyramidal Mn(CO)₅ units joined by a Mn-Mn bond.
Question 5
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The donor sites of EDTA ligand are

A
O-atoms only

B
N-atoms only

C
two N-atoms and four O-atoms

D
three N-atoms of EDTA ion

Solution

Ethylenediaminetetraacetate ion (EDTA)^4- is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion.
Question 6
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The IUPAC name of [Ni(PPh₃ )₂ CI₂ ]²⁺ is

A
bis dichloro(triphenylphosphine) nickel (II) ion

B
dichloro bis (triphenylphosphine) nickel (ll)ion

C
dichloro triphenylphosphine nickel (II) ion

D
triphenylphosphine nickel (ll)dichloride

Solution

The IUPAC name of [Ni(PPh₃ )CI₂ ]²⁺ is dichloro bis (triphenylphosphine) nickel (ll)ion.
Question 7
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Formula of brown ring complex is

A
[Fe(H₂ O)(NO₂ )₅ ]SO₄

B
[Fe(H₂ O)₃ (NO₂ )₃ ]SO₄

C
[Fe(H₂ O)₅ (NO)]SO₄

D
[Fe(H₂ O)₄ (NO)₂ ]SO₄

Solution

The brown ring test for nitrates depend on the ability of Fe²⁺ to reduce nitrates to nitric oxide, which reacts with Fe²⁺ to form a brown coloured complex.
Question 8
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The IUPAC name of the compound K[SbCl₅ Ph] is

A
Potassium chlorophenylantimonate (V)

B
Potassium pentachloro(phenyl) antimonate (V)

C
Potassium pentachlorobenzylantimonate (V)

D
None of the above

Solution

The IUPAC name of the compound K[SbCl₅ Ph] is potassium pentachloro(phenyl) antimonate (V).
Question 9
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K₂ [OsCI₅ N] is named as

A
potassium pentachloroazoosmate(VI)

B
potassium pentachloroazoosmate(VII)

C
potassium pentachloroazidoosmate(VI)

D
potassium pentachloronitroniumosmate(VI)

Solution

K2[OsCI5N] is named as potassium pentachlorozoosmate (VI)
Question 10
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What is the IUPAC name of compound NaBH₄ ?

A
Sodium boronhydride

B
Sodium tetrahydridoboron (III)

C
Sodium tetrahydridoborate (III)

D
Sodium tetrahydridoborate (I)

Solution

The IUPAC name of NaBH₄ is sodium tetrahydridoborate

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Coordination Compounds Test - 4

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Question 1

sodium nitroferricyanide

sodium nitroferrocyanide

sodium pentacyanonitrosyliumferrate (II)

sodium pentacyanonitrosylferrate (III)

Solution

Question 2

[Co(NH3 )6 ]CISO4

[Co(NH3 )6 CI]SO4

[Co(NH3 )6 CISO4 ]

None of these

Solution

Question 3

pentammine isothiocyanatochromium (III) tetrachlorozincate (II)

pentaammine thiocyanatochromium (III) tetrachlorozincate (II)

pentammine isothiocyanatochromium (0) tetrachlorozincate (IV)

pentammine thiocyanatochromium (0) tetrachlorozincate (IV

Solution

Question 4

bis (pentacarbonyl dimanganese)

decacarbonyldimanganate (0).

bis (pentracarbonylmanganese) (0)

bis (pentacarbonyldimanganate) (ll)

Solution

Question 5

O-atoms only

N-atoms only

two N-atoms and four O-atoms

three N-atoms of EDTA ion

Solution

Question 6

bis dichloro(triphenylphosphine) nickel (II) ion

dichloro bis (triphenylphosphine) nickel (ll)ion

dichloro triphenylphosphine nickel (II) ion

triphenylphosphine nickel (ll)dichloride

Solution

Question 7

[Fe(H2 O)(NO2 )5 ]SO4

[Fe(H2 O)3 (NO2 )3 ]SO4

[Fe(H2 O)5 (NO)]SO4

[Fe(H2 O)4 (NO)2 ]SO4

Solution

Question 8

Potassium chlorophenylantimonate (V)

Potassium pentachloro(phenyl) antimonate (V)

Potassium pentachlorobenzylantimonate (V)

None of the above

Solution

Question 9

potassium pentachloroazoosmate(VI)

potassium pentachloroazoosmate(VII)

potassium pentachloroazidoosmate(VI)

potassium pentachloronitroniumosmate(VI)

Solution

Question 10

Sodium boronhydride

Sodium tetrahydridoboron (III)

Sodium tetrahydridoborate (III)

Sodium tetrahydridoborate (I)

Solution

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[Co(NH₃ )₆ ]CISO₄

[Co(NH₃ )₆ CI]SO₄

[Co(NH₃ )₆ CISO₄ ]

[Fe(H₂ O)(NO₂ )₅ ]SO₄

[Fe(H₂ O)₃ (NO₂ )₃ ]SO₄

[Fe(H₂ O)₅ (NO)]SO₄

[Fe(H₂ O)₄ (NO)₂ ]SO₄