Download PTU M-Sc -Chemistry 3rd Semester May 2019 72619 INORGANIC CHEMISTRY II Question Paper

Download PTU (I. K. Gujral Punjab Technical University) MSc -Chemistry 3rd Semester May 2019 72619 INORGANIC CHEMISTRY II Question Paper.

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Roll No. Total No. of Pages : 02
Total No. of Questions : 09
M.Sc.(Chemistry) (2015 to 2017) (Sem.?3)
INORGANIC CHEMISTRY-II
Subject Code : MSCH-301
M.Code : 72619
Time : 3 Hrs. Max. Marks : 100

INSTRUCTIONS TO CANDIDATES :
1. Attempt FIVE questions in ALL including the COMPULSORY question No.1. and
selecting ONE each from Unit-I to Unit-IV.

1. Answer briefly : (2 ? 10 = 20)
(a) Why do transition metals in zero or lower oxidation statesform complexes with ligands
like CO and NO?
(b) How is VOCl
2
obtained from VOCl
3
?
(c) Discuss the structure of [TaF
8
]
3?
.
(d) Can pyrazinium ion behave as ligand?
(e) Why Cerium (IV) sulphate is used in redox reactions?
(f) What are carbenes? Discuss its types.
(g) Discuss the chemistry of hexone method.
(h) How will you prepare Wilkinson catalyst?
(i) Define ?-acidity and give an example.
(j) What is mercuration? Cite an example.

UNIT-I
2. (a) Discuss the various factors responsible for the kinetic instability of transition metal-
carbon ? bonded compounds. (10)
(b) Discuss the oxidation-reduction reactions occurring through the transfer of atoms or
groups, with examples. (10)
3. (a) Give detailed account of oxidation states and stereochemistry of Palladium and
Platinum. (10)
(b) What is trans effect? How would you distinguish cis and trans isomer of PtC1
2
(NH
3
)
2

on the basis of this effect. (10)
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1 | M - 7 2 6 1 9 ( S 1 7 ) - 4 4 9
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
M.Sc.(Chemistry) (2015 to 2017) (Sem.?3)
INORGANIC CHEMISTRY-II
Subject Code : MSCH-301
M.Code : 72619
Time : 3 Hrs. Max. Marks : 100

INSTRUCTIONS TO CANDIDATES :
1. Attempt FIVE questions in ALL including the COMPULSORY question No.1. and
selecting ONE each from Unit-I to Unit-IV.

1. Answer briefly : (2 ? 10 = 20)
(a) Why do transition metals in zero or lower oxidation statesform complexes with ligands
like CO and NO?
(b) How is VOCl
2
obtained from VOCl
3
?
(c) Discuss the structure of [TaF
8
]
3?
.
(d) Can pyrazinium ion behave as ligand?
(e) Why Cerium (IV) sulphate is used in redox reactions?
(f) What are carbenes? Discuss its types.
(g) Discuss the chemistry of hexone method.
(h) How will you prepare Wilkinson catalyst?
(i) Define ?-acidity and give an example.
(j) What is mercuration? Cite an example.

UNIT-I
2. (a) Discuss the various factors responsible for the kinetic instability of transition metal-
carbon ? bonded compounds. (10)
(b) Discuss the oxidation-reduction reactions occurring through the transfer of atoms or
groups, with examples. (10)
3. (a) Give detailed account of oxidation states and stereochemistry of Palladium and
Platinum. (10)
(b) What is trans effect? How would you distinguish cis and trans isomer of PtC1
2
(NH
3
)
2

on the basis of this effect. (10)
2 | M - 7 2 6 1 9 ( S 1 7 ) - 4 4 9
UNIT-II
4. (a) The ?Tunneling? electron transfer process involves a very low chemical activation
energy. Justify the observation. (10)
(b) Discuss in details about oxides, chalcogenides and halides formed by members of
actinide series. (10)
5. (a) [FeF6]
3?
is colorless whereas [CoF6]
3?
is colored. How can this difference be accounted
for? (10)
(b) Discuss the molecular orbital diagram for [Co(en)
3
]
3+
.

(10)
UNIT-III
6. (a) How do trialkylphosphines, arsines and stibines act as ligands? Even being weak
?-donors, why do these ligands form kinetically stable complexes with transition metal
ions? (10)
(b) Discuss the theoretical basis of the 18-electron rule. Does this rule apply for high spin
organometallic octahedral complexes? If not, why? (10)
7. (a). Discuss some examples in details where cyclopentadienyl group acts as one-electron as
well as five-electron ligand. (10)
(b) What spectroscopic evidences are the appropriate to demonstrate Jt-back bonding in
transition metal alkenyl and alkynyls? Give reasons. (10)
UNIT-IV
8. (a) Write a detailed note on the technetium complexes in synthesis and transformations. (10)

(b) Discuss about metal embedded polymers as functional materials with examples. (l0)
9. (a) Discuss the structure, synthesis and applications of inorganic polymers having
pthalocyanine and similar structural units. (l0)
(b) How the transition metal complexes play a role in DNA cleavage? (10)




NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.

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