Unacademy Class 11 Chemistry Notes Pdf Portable [top] Download -

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Concepts of system and surroundings, first and second laws of thermodynamics, enthalpy, entropy, and Gibbs free energy.

| Chapter | Topics Covered | How to Use the PDF | | :--- | :--- | :--- | | | Importance of chemistry, nature of matter, laws of chemical combination, Dalton's atomic theory, atomic and molecular masses, mole concept, percentage composition, stoichiometry. | Read before solving numerical problems. Use it to memorise the laws and key formulas like the mole concept. | | 2. Structure of Atom | Discovery of subatomic particles (electron, proton, neutron), atomic models (Thomson, Rutherford, Bohr), quantum mechanical model, quantum numbers, Pauli's exclusion principle, Hund's rule, Aufbau principle. | Use to understand the evolution of atomic theory. The diagrams in the PDF are crucial for visualising complex models. | | 3. Classification of Elements and Periodicity in Properties | Dobereiner's triads, Newlands' law of octaves, Mendeleev's periodic table, modern periodic table, periodic trends (atomic radius, ionisation enthalpy, electron gain enthalpy, electronegativity). | Excellent for memorising periodic trends. Practice explaining trends across a period and down a group. | | 4. Chemical Bonding and Molecular Structure | Kossel-Lewis approach, octet rule, ionic bond, covalent bond, bond parameters, Lewis structures, VSEPR theory, valence bond theory, hybridisation, molecular orbital theory, hydrogen bonding. | Use to master the art of drawing Lewis structures and predicting molecular geometries using VSEPR theory. | unacademy class 11 chemistry notes pdf portable download

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Use the formula sheets provided in the physical chemistry notes to solve practice questions daily.

Concepts of system, surroundings, work, heat, and internal energy. First and Second Laws of Thermodynamics. Enthalpy ( ), Entropy ( ), and Gibbs Free Energy ( Spontaneity of criteria for chemical reactions. Dynamic nature of equilibrium and Law of mass action. Le Chatelier’s principle and its industrial applications. | Read before solving numerical problems

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: Covers stoichiometry, mole concept, and empirical formulas.

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