B.Sc.- FIRST YEARCHEMISTRYThere shall be three written papers and a practical examination as follows:
I Inorganic Chemistry 33 Paper
II Organic Chemistry 33 Paper
III Physical Chemistry 34 TOTAL 100 PRACTICAL 50 GRAND TOTAL 150 Candidate will be required to pass in Theory and Practical Separately.
I Chemistry (Paper-I) Inorganic Chemistry : Unit
Idea of de-Broglie matter waves, Heisenberg uncertainty principle, atomic orbitals, Schrdinger wave equation, significance of
and , quantum numbers, radial and angular wave functions and probability distribution curves, shapes of s, p, d, orbitals, Aufbau and Pauli exclusion principles, Hund's multiplicity rule, Electronic configurations of the elements, effective nuclear charge.
Atomic and ionic radii, ionization energy, electron affinity and electronegativity-definition, methods of determination or evaluation, trends in periodic table and applications in predicting and explaining the chemical behaviour.Unit
Chemical Bonding: (A) Covalent Bond
Valence bond theory and its limitations, directional characteristics of covalent bond, various types of hybridization and shapes of simple inorganic molecules and ions, valence shall electron pair repulsion (VSEPR) theory to NH, H, SF, CIF, ICl and HO, MO theory, homonuclear and heteronuclear (CO and NO) diatomic molecules, multicenter bonding in electron deficient molecules, bond strength and bond energy, percentage ionic character from dipole moment and electro-negativity difference.(B) Ionic Solids
Ionic structures, radius ratio effect and coordination number, limitation of radius ratio rule, lattice defects, semiconductors, lattice energy and Born-Haber cycle, salvation energy and solubility of ionic solids, polarizing power and polarisability of ions, Fajan's rule, Metallic bond-free electron, valence bond and band theories.
(C) Weak Interactions
Hydrogen bonding, Vander Waals forces.Unit
Comparative study, diagonal relationship, salient features of hydrides, solvation and complexation tendencies including their function in biosystems, an introduction to alkyls and aryls.V.Chemistry of Noble Gasses:
Chemical properties of the noble gases, chemistry of xenon, structure and bonding in xenon compounds.
Comparative study (including diagonal relationship) of groups 13-17 elements, compounds like hydrides, oxides, oxyacids and halides of group 13-16, hydrides of boron-diborane and higher boranes, borazine, borohydrides, fullerenes, carbides, fluorocarbons, silicates (structural principle), tetrasulphur tetra nitride, basic properties of halogens, interhalogens and Chemistry (Paper-II) Organic Chemistry : Unit
II.Structure and Bonding:
Hybridization, bond lengths and bond angles, bond energy, localized and delocalized chemical bonding, van der Waals interactions, inclusion compounds, clatherates, charge transfer complexes, resonances, hyperconjugation, aromaticity, inductive and field effects, hydrogen bonding.II.Mechanism of Organic Reactions:
Curved arrow notation, drawing electron movements with allows, half-headed and double-headed arrows, homolytic and heterolytic bond fission, Types of reagents
electrophiles and nucleophiles, Types of organic reactions, Energy considerations.
Carbocations, carbanions, free radicals, carbenes, arynes and nitrenes (with examples).
Assigning formal charges on intermediates and other ionic species.Methods of determination of reaction mechanism (product analysis, intermediates, isotope effects, kinetic and stereochemical studies).
III.Alkanes and Cycloalkanes: IUPAC nomenclature of branched and unbranched alkanes, the alkyl group, classification of carbon atom in alkanes, Isomerism in alkanes, sources methods of formation (with special reference to Wurtz reaction, Kolbe reaction, Corey-House reaction and decarboxylation of carboxylic acids), physical properties and chemical reactions of alkanes, Mechanism of free radical halogenation of alkanes: orientation, reactivity and selectivity.
Nomenclature, methods of formation, chemical reactions, Baeyer's strain theory and its limitations.Ring strain in small rings (cyclopropane and cyclobutane), theory of strain less rings.The case of cyclopropane ring, banana bonds.Unit
IIIV.Stereochemistry of Organic Compounds:
Concept of isomerism, Types of isomerism; Optical isomerism
elements of symmetry, molecular chirality, enantiomers, stereogenic center, optical activity, properties of enantiomers, chiral and achiral molecules with two stereogenic centers, disasteromers, threo and erythro diastereomers, meso compounds, resolution of enantionmer, inversion, retention and recemization.Relative and absolute configuration, sequence rules, D & L and R & S systems of nomenclature.
determination of configuration of geometric isomers, E & Z system of nomenclature, geometric isomerism in oximes and alicyclic compounds.Conformational isomerism
conformational analysis of ethane and n-butane; conformations of cyclohexane, axial and equatorial bonds, conformation of mono substituted cyclohexane derivatives, Newman projection and Sawhorse formulae, Fischer and flying wedge formulae, Difference between configuration and .Alkenes, Cycloalkenes, Dienes and Alkynes:
Nomenclature of alkenes, methods of formation, mechanisms of dehydration of alcohols and dehydrohalogenation of alkyl halids, regioselectivity in alcohol dehydration, The Saytzeff rule, Hofmann elimination, physical properties and relative stabilities of alkenes.Chemical reactions of alkenes
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