Details of CH1101 (Autumn 2023)

Level: 1 Type: Theory Credits: 3.0

Course CodeCourse NameInstructor(s)
CH1101 Elements of Chemistry I Soumyajit Roy,
Supratim Banerjee

Syllabus
Electrons in Atoms: Dual nature of light and matter; wave function for hydrogen atom: radial and
angular part; introducing orbitals; hydrogen like atoms; multielectron atoms; orbital pictures, orbital
energies, radial probability distribution; shape of s and p orbitals (7 lectures)

Bonding-I: Introducing Molecular orbitals: linear combination of AOs; bonding and anti-bonding
MO; symmetry labels; MO diagrams; overlap and overlap integral (qualitative); H 2 , He 2 and their
ions: rules for forming MOs; types of MOs formed from 2s and 2p; qualitative MO diagram of
homonuclear diatomics and correlation with photoelectronic spectra. MO diagrams of heteronuclear
diatomics: LiH, HF, CO, and NO; HOMO and LUMO. Hybrid orbitals. (8 lectures)

Periodic Trends: Trends in Bonding: orbital energies and effective nuclear charges; variation of
orbital energy; electronegativity and orbital energy. (1 lecture)

Properties of selected main group compound and application in daily life (2 lectures)

Bonding in organic Molecules: Hybrid atomic orbitals; MOs in halides, alcohols, aldehydes, and
ketones; delocalized bonding: pi MOs of butadiene and allyl systems, conjugation and color;
resonance. (4 lectures)

MOs and organic reactions: Redistribution of electrons in a reaction; HOMO-LUMO interactions;
sigma conjugation. (2 lectures)

Nucleophilic substitution reactions (S N 1 and S N 2): Dependence of rate on steric effect, nature of
solvent, nucleophiles and leaving groups. (4 lectures)

References
Reference Book

Chemical Structure and Reactivity: An Integrated Approach, James Keeler and Peter Wothers

Course Credit Options

Sl. No.ProgrammeSemester NoCourse Choice
1 IP 1 Not Allowed
2 IP 3 Not Allowed
3 IP 5 Not Allowed
4 MP 1 Not Allowed
5 MP 3 Not Allowed
6 MR 1 Not Allowed
7 MR 3 Not Allowed
8 MS 1 Core
9 RS 1 Not Allowed
10 RS 2 Not Allowed