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Total questions: 62

Worksheet time: 43mins

Name
Class
Date
1.

A coordination complex’s core atom/ion is also known as

a)

Bronsted-Lowry acid

b)

Lewis base

c)

Lewis acid

d)

Bronsted-Lowry base

2.

Which of the following has a coordination number as a feature?

a)

Coordination entity

b)

Ligand

c)

Central atom

d)

Coordination compound

3.

The oxidation number of Cr in a [Cr(NH3)2F4]– complex is

a)

II


b)

III

c)

IV

d)

VI.

4.

Which of following has highest CFSE

a)

[Cr(H2O)6]3+

b)

[Mn(H2O)6]2+

c)

[FeCl4]2-

d)

[TiF6]3-

5.

In the complex [SbF5]2–, sp3d hybridisation is present. Geometry of the complex is

a)

Square pyramidal

b)

Square bipyramidal

c)

 Tetrahedral

d)

Square planar

6.

In K4[Fe(CN)6], Fe is in the form of

a)

An atom

b)

 Neutral complex

c)

Cationic complex        

d)

Anionic complex

7.

High spin complexes having coordination number ‘ 6 ’ are usually formed through

a)

sp3d2 hybridisation

b)

d2sp3 hybridisation

c)

sp3d hybridisation

d)

sp3 hybridisation

8.

The metal carbonyl which is paramagnetic is

a)

Ni(CO)4

b)

V(CO)6

c)

Cr(CO)6

d)

Fe(CO)5

9.

The species having tetrahedral shape is

a)

[Pd(Cl)4]2–

b)

[Ni(CN)4]2–

c)

[Pd(CN)4]2–

d)

[Ni(Cl)4]2–

10.

The strong field ligand is

a)

SCN–

b)

I–

c)

S2–

d)

NO2-

11.

The orbitals of iron involved in the hybrdization in Fe(CO)5 are

a)

s, px, py, pz and

dx2 -y2

b)

s, px, py, dx2 -y2 and

dz2

c)

s, px, py, pz and

dz2

d)

s, px, pz, dxy and

dx2 -y2

12.

How many chloride ions will be precipitated in the complex ,if coordination number is 6.

PtCl4.3NH3PtCl_4.3NH_3  

a)

1

b)

2

c)

3

d)

4

13.

Ligands and central metal ions are respectively

a)

lewis base and lewis acid

b)

lewis acid and lewis base

c)

both lewis base

d)

bothlewis acid

14.

The IUPAC name for [Pt(NH3)3(Br)(NO2)(Cl)]Cl is

a)

(a) triamminechlorobromonitroplatinum(IV) chloride

b)

(b) triamminebromochloronitroplatinum(IV) chloride

c)

(c) triaminenitrochlorobromoplatinum(IV) chloride

d)

(d) triamminechloronitrobromoplatinum(IV) chloride

15.

The pair [Co(NH3)5NO3]SO4 and [Co(NH3)5SO4]NO3 will exhibit

a)

(a) hydrate isomerism

b)

(b) linkage isomerism

c)

(c) ionization isomerism

d)

(d) coordinate isomerism

16.

The hybridization states of the central atom in the complex ions [FeF6]3-, [Co(NH3)6]3+ and [Fe(H2O)6]3+ are

a)

(a) sp3d2, dsp2 and sp3d2 respectively

b)

(b) all d2sp3

c)

(c) all sp3d2

d)

(d) sp3d2, d2sp3 and sp3d2 respectively

17.

In [Cr(C2O4)3]3–, the isomerism shown is –

a)

(a) Ligand

b)

(b)Optical

c)

(c)Geometrical

d)

(d) Ionization

18.

Which of the following species has the electron configuration [Ar]3d4?

a)

(a) Ti

b)

(b) V2+

c)

(c) Cr2+

d)

(d) Fe2+

19.

How many unpaired electrons are present in [CoCl6]3- complex and which metal orbitals are used in bonding?

a)

(a) 0 unpaired electrons and 4s, 4p and 4d orbitals to give sp3d2 hybridization.

b)

(b) 4 unpaired electrons and 4s, 4p and 4d orbitals to give sp3d2 hybridization.

c)

(c) 0 unpaired electrons and 3d, 4s and 4p orbitals to give d2sp3 hybridization.

d)

(d) 4 unpaired electrons and 3d, 4s and 4p orbitals to give d2sp3 hybridization

20.

Which of the following species is expected to be colourless?

a)

(a) [Ti(H2O)6]3+

b)

(b) [Sc(H2O)6]2+

c)

(c) [Cr(NH3)6]3+

d)

(d) [Fe(CN)6]4-

21.

The ''spin-only''magnetic moment [in units of Bohr magneton ] of Ni2+ in aqueous solution would be (At.

No. Ni = 28) –

a)

(a) 0

b)

(b) 1.73

c)

(c) 2.84

d)

(d) 4.90

22.

The coordination number and the oxidation state of the element 'E' in the complex [Co(en)2Cl2]+

(where (en) is ethylene diamine) are, respectively–

a)

(a) 6 and +2

b)

(b) 4 and +2

c)

(c) 4 and +3

d)

(d) 6 and +3

23.

Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal ion

a)

the relative positions of the unidentate ligands attached to the central metal atom are the same with respect to each other

b)

the relative positions of the unidentate ligands attached to the central metal atom are the different with respect to each other

c)

both are correct

d)

none of these

24.

The spin only magnetic moment of [MnBr4]2– is 5.9 BM. Predict the geometry of the complex ion

a)

square planner

b)

tetrahedral

c)

trigonal planner

d)

trigonal pyramidal

25.

How many geometrical isomers are possible in the following coordination entities [Cr(C2O4)3]3–

a)

1

b)

2

c)

3

d)

zero

26.

How many ions are produced from the complex [Co(NH3)6]Cl2 in solution?

a)

6

b)

4

c)

3

d)

2

27.

Amongst the following, the most stable complex is

a)

(i) [Fe(H2O)6]3+

b)

(ii) [Fe(NH3)6]3+

c)

(iii) [Fe(C2O4)3]3–

d)

[FeCl6]3–

28.

Which of the following pairs represents linkage isomers

a)

[Pd (PPh3)2 (NCS)2] and [Pd (PPh3)2 (SCN)2]

b)

[Co(NH3)5NO3] SO4 and [Co(NH3)5SO4] NO3

c)

[PtCl2(NH3)4]Br2 and [Pt Br2 (NH3)4] Cl2

d)

[Cu(NH3)4 [PtCl4]] and [Pt(NH3)4] [CuCl4]

29.

Find the oxidation number for [Co(NH 3 ) 4 (H 2 O)Cl] 2+

a)

+ 3

b)

+ 2

c)

+ 1

d)

0

30.

Ambidentate ligand is a type of ligand which have the ability to bind to different central metal atoms via the donor atom

a)

True

b)

False

31.

Give the molecular formula for hexaammineiron(III) nitrate

a)

[Fe(NH3)6](NO)3

b)

[Fe(NH3)6](NO3)

c)

[Fe(NH3)6](NO3)3

d)

[Fe(NH3)3](NO3)3

32.

Give the IUPAC name for [Cr(NH3)3(H2O)3]Cl3

a)

triamminetrichromiumaqua(III) chloride

b)

triamminetriaquachromium(III) chloride

c)

triamminetriaquachromium(III)

d)

triamminetriaqua(III) chloride

33.

what is the geometry for dsp3 hybridisation

a)

trigonal bipyramidal

b)

square planar

c)

Octahedral

d)

tetrahedral

34.

According to Werner's theory

a)

Primary valency can be ionized

b)

Secondary valency can be ionized

c)

Primary and Secondary valency both cannot can be ionized

d)

only Primary valency cannot be ionized

35.

Which does not obey EAN rule

a)

[Cu (NH3)4 ] 2+

b)

[ Zn (OH) 4 ] 2-

c)

[HgI4] 2-

d)

Fe ( CO)5

36.

The primary valency corresponds to

a)

coordination number

b)

charge on the complex

c)

oxidation number

d)

counter ions

37.

The primary valency cannot be

a)

positive

b)

neutral

c)

positive or neutral

d)

negative

38.

sp3 hybridisation leads to

a)

Tetrahedral shape

b)

Octahedral shape

c)

Hexagonal shape

d)

Trigonal bipyramid

39.

The secondary valency are

a)

directional and ionisable

b)

directional and non ionisable

c)

non direstional and non ioisable

d)

non direstional and ioisable

40.

1. The donor sites of (EDTA)4- are ?

a)

O atoms only

b)

N atoms only

c)

Two N and four O atoms

d)

Three N and three O atoms

41.

The compound having lowest oxdation state of iron is

a)

K4[Fe(CN)6]

b)

K2FeO4

c)

[Fe(CO)5]

d)

K3[Fe(CN)6]

42.

EAN (Effective Atomic Number) of a metal carbonyl M(CO)x is 36. If atomic number of metal M is 26, what is the value of x ?

a)

4

b)

8

c)

5

d)

6

43.

The sum of coordination number and oxidation number of the metal M in the complex [M(en)2 C2O4] Cl are

a)

6

b)

7

c)

8

d)

9

44.

What type of bond in Ozone?

a)

1 covalent and 1 coordinate bond

b)

2 covalent and 1 coordinate bond

c)

1 coordinate bond only

d)

1 covalent bond only

45.

EAN rule was proposed by -----

a)

Jean Marie Lehn

b)

Alfred Werner

c)

Sidgwick

d)

De Broglie

46.

Find the oxidation number for [Co(NH 3 ) 4 (H 2 O)Cl] 2+

a)

+ 3

b)

+ 2

c)

+ 1

d)

0

47.

Ambidentate ligand is a type of ligand which have the ability to bind to different central metal atoms via the donor atom

a)

True

b)

False

48.

Give the molecular formula for hexaammineiron(III) nitrate

a)

[Fe(NH3)6](NO)3

b)

[Fe(NH3)6](NO3)

c)

[Fe(NH3)6](NO3)3

d)

[Fe(NH3)3](NO3)3

49.

Give the IUPAC name for [Cr(NH3)3(H2O)3]Cl3

a)

triamminetrichromiumaqua(III) chloride

b)

triamminetriaquachromium(III) chloride

c)

triamminetriaquachromium(III)

d)

triamminetriaqua(III) chloride

50.

what is the geometry for dsp3 hybridisation

a)

trigonal bipyramidal

b)

square planar

c)

Octahedral

d)

tetrahedral

51.

According to Werner's theory

a)

Primary valency can be ionized

b)

Secondary valency can be ionized

c)

Primary and Secondary valency both cannot can be ionized

d)

only Primary valency cannot be ionized

52.

Which does not obey EAN rule

a)

[Cu (NH3)4 ] 2+

b)

[ Zn (OH) 4 ] 2-

c)

[HgI4] 2-

d)

Fe ( CO)5

53.

The primary valency corresponds to

a)

coordination number

b)

charge on the complex

c)

oxidation number

d)

counter ions

54.

The primary valency cannot be

a)

positive

b)

neutral

c)

positive or neutral

d)

negative

55.

sp3 hybridisation leads to

a)

Tetrahedral shape

b)

Octahedral shape

c)

Hexagonal shape

d)

Trigonal bipyramid

56.

The secondary valency are

a)

directional and ionisable

b)

directional and non ionisable

c)

non direstional and non ioisable

d)

non direstional and ioisable

57.

1. The donor sites of (EDTA)4- are ?

a)

O atoms only

b)

N atoms only

c)

Two N and four O atoms

d)

Three N and three O atoms

58.

The compound having lowest oxdation state of iron is

a)

K4[Fe(CN)6]

b)

K2FeO4

c)

[Fe(CO)5]

d)

K3[Fe(CN)6]

59.

EAN (Effective Atomic Number) of a metal carbonyl M(CO)x is 36. If atomic number of metal M is 26, what is the value of x ?

a)

4

b)

8

c)

5

d)

6

60.

The sum of coordination number and oxidation number of the metal M in the complex [M(en)2 C2O4] Cl are

a)

6

b)

7

c)

8

d)

9

61.

What type of bond in Ozone?

a)

1 covalent and 1 coordinate bond

b)

2 covalent and 1 coordinate bond

c)

1 coordinate bond only

d)

1 covalent bond only

62.

EAN rule was proposed by -----

a)

Jean Marie Lehn

b)

Alfred Werner

c)

Sidgwick

d)

De Broglie

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