Gauhati University Question Papers for Chemistry 4th Semester
Gauhati University Question Papers for Chemistry 4th Semester
Question Paper from 2010 available
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Semester IV
PAPER
M 401
Unit
4.1 Properties of Inorganic
Compounds
Groupwise
and periodwise trends in physical and chemical properties of elements and their
compounds with illustrative examples from Groups 1, 2, and 13-17. The
following should be emphasized, explaining the factors affecting these trends-
(a)
Electronic configuration, effective nuclear charge, Slater’s rule, size of atoms,
ions and atomic orbital.
(b)
Ionization energy and electron affinity of atoms.
(c)
Tendency for homo and hetero catenation, the energy of M-M, M-O and M-X
bonds
(M=element,
X=halogen).
(d)
Tendency to use vacant d-orbital and electropositive character of metals.
(e) Electro negativity of elements.
(f) Melting
point and boiling point of elements and their compounds. (g) Solubility of salts
and molecules in water.
(h)
Relative acid –base strength of Lewis and protonic acids with reference to
oxides,
hydroxides
and oxoacids.
(i)
Electrode potentials and redox behaviour in aqueous solutions.
Unit
4.2 Chemistry of Non-transition Elements I
Polarizing
power of cations, Polarisability of anions and consequences of Fajan’s
rules, the concept of chemical hardness and the theory and applications of
Pearson’s HSAB concept.
The Latimer
diagram and Frost diagram and their uses.
Non
aqueous solvents : liquid ammonia, liquid sulphur dioxide, liquid HF and liquid
N2O4.
Preparation,
properties, bonding and structure of the following (excepting where
specific aspects have been mentioned):
a. Ortho
and Para hydrogen, hydrates, clathrates and inclusion compounds, binary metallic
hydrides.
b.
Diborane and higher boron hydrides.
c. Allotropes
of carbon (including fullerenes), graphite, intercalation compounds,
carbides,
cyanogens, oxides and oxoacids of carbon.
Unit
4.3 Chemistry of Non-transition Elements II
a. Allotropes
of phosphorous, Hydrides, oxides and oxoacids of nitrogen and phosphorous,
Hydrazine, Hydroxylamine and hydrogen azide, clinical use of NO and N2O.
b.
Super oxide and oxygen fluorides, Allotropes of sulphur, halides, oxides,
hydrides, oxoacids and per acids of sulphur, mechanism of formation
and depletion of ozone layer.
PAPER
M 402
Unit
4.4 Chemistry of Non-transition
Elements
a. Interhalogen
compounds, polyhalides, pseudo halogen, oxides and oxoacids of halogens.
b.
Noble gas compounds-xenon oxides and fluorides.
c. Inorganic
chains, ring and cages: Silicate, Aluminosilicates, zeolites, silicones,
Borazine, Phosphazine, S4N4, P4, P4O6, P4O10, boron cage compounds,
carboranes and metallocarboranes.
Unit
4.5 Chemistry of Metals
Bonding
in metals, physical and chemical properties of metals, important
alloys and intermetallic compounds. Occurrence and principles of
extraction of Ni, Cr, Mn, Au, V and Mo. Physical and chemical properties of
ionic compounds of alkali metals, alkaline earth metals and aluminium.
Allotropes of tin, Inert pair effect in Sn, Pb and Tl, structure and properties
of oxides, hydroxides and halides. Coordination compounds of Sn, Pb, As and Se.
Zn, Cd, Hg: Stereochemistry of compounds, the mercurous ion, divalent compounds,
coordination complexes.
Unit
4.6 Transition Metals
Electronic
configuration and general periodic trends, comparative study of first
transition series elements, preparation, properties and reactivity of oxides,
hydroxides and halides
of V-Cu.
Trends in
physical and chemical properties of second and third transition series in comparison
to the first, study of oxides and halides of Au,Ag,Mo,Ru,Rh,Ir,Pd and Pt.
Coordination
Compounds: Werner’s theory, structural and stereo isomers of complex compounds,
survey of different types of ligands, IUPAC nomenclature of coordination compounds.
Preparation, structure, bonding and reactivity of complexes containing the
following as one of the ligands: CO, N2, CN-, O2, CH3COO-, C2O42- ,
NH3, en, acac.
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