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12th Chemistry weekly Test - 4 ( Coordination Chemistry )

St. Britto Hr. Sec. School - Madurai

12th Chemistry weekly Test - 4 ( Coordination Chemistry )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

The ligand capable of coordinating in two or more ways with the central metal ion are called ___________ ligands.

didentate
tridentate
ambidentate
none of the above

For a compound K₄[Fe(CN)₆] ⇾4K⁺ + [Fe(CN)₆]^4-, the complex ion is

K⁺
CN^-
Fe^II
[Fe(CN)₆]^4-

Werner's theory was not able to explain______________ of coordination compounds

colour
magnetic properties
both (a) and (b)
neither (a) nor (b)

As per IUPAC guidelines, the name of the complex [Co(en)₂(ONO)Cl]Cl is

chlorobisethylenediaminenitritocobalt(III) chloride
chloridobis(ethane-1,2-diamine)nitro K-Ocobaltate(III) chloride
chloridobis(ethane-1,2-diammine)nitrito K-Ocobalt(II) chloridde
chloridobis(ethane-1,2-diamine)nitro K-Ocobalt(III) chloride

Magnu's green salt in______________

[Pt(NH₃)₄[[PtCl₄]
K[PtCl₃(C₂H₄)]
[Ni(CO)₄]
[Fe(Co)₅]

Among the following complexes the one which shows zero crystal field stabilisation energy is

[Mn(H₂O)₆]³⁺
[Fe(H₂O)₆]³⁺
[CO(H₂O)₆]²⁺
[CO(H₂O)₆]³⁺

Which of the following will exhibit linkage isomerism? :

[Co(NH₃)₅ (NO₂)]²⁺
[Co(H₂O)₅CO)]³⁺
[Fe(en)₂CI₂]⁺
all the above

Formula of tris(ethane-1,2-diamine)iron(II)phosphate

[Fe(CH₃-CH(NH₂)₂)₃](PO₄)₃
[Fe(H₂N-CH-CH₂-NH₂)₃](PO₄)
[Fe(H₂N-CH₂-CH₂-NH₂)_3](PO₄)₂
[Fe(H₂N-CH₂-CH₂-NH₂-NH₂)₃]₃(PO₄)₂

Paramagnetic moment is expressed in

Debye unit
k Joules
BM
ergs

The coordination number of Ni(II) in [Ni(CN)₄]^2-is

2
4
5
0

Which of the following complexes does not give white precipitate with AgNO₃?

[Co (NH₃)₆] Cl₃
[Co (NH₃)₃ Cl₃]
[Co (NH₃)₅_Cl] Cl₃
[Co (NH₃)₄ Cl₂]Cl₃

The name of complex ion, [Fe(CN)₆]^3-is

Trieyanoferrate (III) ion
Hexacyano iron (III) ion
Hexacyanitoferrate (III) ion
Hexacyanido ferrate (III) ion

According to IUPAC, No is ______________

nitro
nitrosyl
nitrato
nitrito

An aqueous solution of (PdCI)₂ 4NH_3,when treated with excess of AgNO₃precipitated 2 moles of AgCI. Predict the secondary valency of the compound.

2
3
4
6

Choose the correct statement

Square planar complexes are more stable than octahedral complexes
The spin only magnetic moment of [Cu(Cl)₄]^2- is BM and it has square planar structure.
Crystal field splitting energy \(\left( { \Delta }_{ 0 } \right) \) [FeF₆]^4- is higher than the \((\Delta _{ 0 })\) \([Fe(CN)6]{ { 4 }^{ - } }\)
crystal field stabilization energy of [V(H₂O)₆]²⁺ is higher than the crystal field stabilization of [Ti(H₂O)6]²⁺

Oxidation state of Iron and the charge on the ligand NO in [Fe(H₂O)₅NO]SO₄ are

+2 and 0 respectively
+3 and 0 respectively
+3 and -1 respectively
+1 and +1 respectively

Pick out the central metal ion in the complex K₃[AI(C₂O₄)₃].

3K⁺
Al³⁺
C₂O₄^2-
both (a) and (b)

Fac-mer isomerism is shown by

[CO(en)3]³⁺
[Co(NH₃)4(Cl)₂]⁺
[Co(NH₃)₃(Cl)₃]
[Co(NH₃)5Cl]SO₄

The chemical formula for diammine silver (I) chloride is __________

[Ag(NH₃)₂] Cl
[Ag(NH₃)]Cl
[Ag(NH₂)₂]Cl
[Ag(NH₄)₂]Cl

The ionisation isomer of [Cr(H₂O)₄CI(NO₂)]Cl is ____________

[Cr(H₂O)₄Cl₂(NO)₂]
[Cr(H₂O)₄Cl₂]NO₂
[Cr(H₂O)₄Cl(oNo)]
both (a) and (b)

Paramagnetism is the property of

paired electrons
completely filled electronic sub-shells
unpaired electrons
completely vacant electronic sub-shells

An example of a complex compound having coordination number 4

K₄[Fe(CN)₆]
[Co(en)₃]Cl
[Fe(H₂O)₆]Cl₃
[Cu(NH₃)₄]Cl₂

The primary and secondary valencies of [CoCl₂(en)₂]SO₄ are respectively_____________

4, 6
2, 4
4, 4
6, 4

A complex in which the oxidation number of the metal is zero is

K₄[fe(CN)₆]
[Fe(CN)₃(NH₃)₅]
[Fe(CO)₅]
both (b) and (c)

Which of the following is not true about secondary valency?

It corresponds to the co-ordination number of metal
It is satisfied by negative ions or neutral molecule
They are non directional in nature
both (a) and (b)

The geometry of [Cu(NH₃)₄]²⁺ complex ion

Linear
Tetrahedral
Square planar
Angular

A complex has a molecular formula MSOCl. 6HO42.The aqueous solution of it gives white precipitate with Barium chloride solution and no precipitate is obtained when it is treated with silver nitrate solution. If the secondary valence of the metal is six, which one of the following correctly represents the complex?

[M(H2O)₄Cl]SO₄2H₂O
[M(H₂O)₆]SO₄
[M(H₂O)₅Cl]SO₄H₂O
[M(H₂O)₃Cl]SO₄.3H₂O

The geometry of complex ion [Fe(CN)₆]^4- is

tetrahedral
square planar
octahedral
triangular

Which is a double salt?

K₂SO₄AI₂(SO₄)₃24H₂O
NaCI
K₄[Fe(CN)₆]
KCl

In Co-ordination compound. [Cr(en)₃][CrF₆]·

ligand is en (ethylenediamine)
Oxidation state of central atom is +3
Central metal is Cr (in anomie comples)
Cation complex is [Co(NH₃)₄Cl₂]⁺

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