In Class XI, the chemistry curriculum usually covers the fundamentals of the subject and lays the groundwork for more advanced topics to be studied in Class XII. Here’s a brief overview of the modules typically covered in a Class XI chemistry curriculum:

1. Some Basic Concepts of Chemistry:
   • Introduction to chemistry and its importance
   • Laws of chemical combinations, such as the law of conservation of mass and the law of definite proportions
   • Concept of mole and molar mass
   • Stoichiometry and calculations involving chemical reactions
2. Structure of Atom:
   • Historical development of atomic theory
   • Atomic models, including Dalton’s atomic theory, Thomson’s model, Rutherford’s model, and Bohr’s model
   • Quantum mechanical model of the atom
   • Electronic configuration and its significance
   • Periodic table and periodic properties
3. Classification of Elements and Periodicity in Properties:
   • Introduction to periodicity and periodic table
   • Classification of elements into s, p, d, and f blocks
   • Periodic trends, such as atomic and ionic radii, ionization energy, electron affinity, and electronegativity
4. Chemical Bonding and Molecular Structure:
   • Different types of chemical bonds: ionic, covalent, and metallic
   • Lewis dot structure and formal charge
   • VSEPR theory and molecular geometry
   • Valence bond theory and molecular orbital theory
   • Hybridization and its applications
5. States of Matter:
   • Intermolecular forces and their effects on physical properties
   • States of matter: solids, liquids, and gases
   • The kinetic molecular theory of gases
   • Boyle’s law, Charles’s law, Avogadro’s law, and the ideal gas equation
6. Thermodynamics:
   • Introduction to thermodynamics and its significance
   • Concepts of energy, work, and heat
   • Laws of thermodynamics
   • Enthalpy, entropy, and Gibbs free energy
   • Spontaneity and equilibrium
7. Equilibrium:
   • Reversible and irreversible reactions
   • Chemical equilibrium and its characteristics
   • Le Chatelier’s principle
   • Equilibrium constants and their applications
   • Acid-base equilibrium and pH
8. Redox Reactions:
   • Oxidation and reduction reactions
   • Balancing redox reactions
   • Electrochemical cells and their applications
   • Electrolysis and Faraday’s laws
9. Hydrogen:
   • Position of hydrogen in the periodic table
   • Different forms and isotopes of hydrogen
   • Physical and chemical properties of hydrogen
   • Hydrogen as a fuel
10. s-Block Elements:
    • Group 1 (alkali metals) and Group 2 (alkaline earth metals)
    • General characteristics, electronic configuration, and physical properties
    • Reactions and compounds of alkali metals and alkaline earth metals