NCERT Chemistry Grade 11 Chapter 2, Structure of Atom belongs to Unit 2 of the syllabus. Unit 1, Some Basic Concepts of Chemistry and Unit 2, Structure of Atom hold a weightage of 11 marks in the Grade 11 final examination. In this chapter the student will learn about the discovery of electron, proton, neutron and their characteristics, description of Thomson, Rutherford and Bohr atomic models, important features of the quantum mechanical model of atom, nature of electromagnetic radiation and Planck’s quantum theory, photoelectric effect and features of atomic spectra, de Broglie relation and Heisenberg’s uncertainty principle, atomic orbital in terms of quantum numbers, Aufbau principle, Pauli exclusion principle and Hund’s rule of maximum multiplicity and how to write electronic configuration of atoms.
The students will also learn about Charge to Mass Ratio of Electron, Charge on the Electron, Atomic Number and Mass Number, Isobars and Isotopes, drawbacks of Rutherford Model, developments leading to the Bohr’s model of atom, wave nature of electromagnetic radiation, particle nature of electromagnetic radiation, Bohr’s model for hydrogen atom, explanation of line spectrum of hydrogen, limitations of Bohr’s model towards quantum mechanical model of the atom, dual behaviour of matter, quantum mechanical model of atom, orbitals and quantum numbers, shapes of atomic orbitals, energies of orbitals, filling of orbitals in atom, stability of completely filled and half-filled subshells. NCERT Chemistry Grade 11 Chapter 2, Structure of Atom will help the students to strengthen their concepts about the structure of an atom so that they can score well in the Board Examination, JEE, NEET, AIPMT and other tests.
Get 100 percent accurate NCERT Solutions for Class 11 Chemistry Chapter 2 (Structure of Atom) solved by expert Chemistry teachers. We provide solutions for questions given in Class 11 Chemistry text-book as per CBSE Board guidelines from the latest NCERT book for Class 11 Chemistry. The topics and sub-topics in Chapter 2 Structure of Atom are given below.
Ex 2.1 - SUB-ATOMIC PARTICLES
Ex 2.1.1 - Discovery of Electron
Ex 2.1.2 - Charge to Mass Ratio of Electron
Ex 2.1.3 - Charge on the Electron
Ex 2.1.4 - Discovery of Protons and Neutrons
Ex 2.2 - ATOMIC MODELS
Ex 2.2.1 - Thomson Model of Atom
Ex 2.2.2 - Rutherford’s Nuclear Model of Atom
Ex 2.2.3 - Atomic Number and Mass Number
Ex 2.2.4 - Isobars and Isotopes
Ex 2.2.5 - Drawbacks of Rutherford Model
Ex 2.3 - DEVELOPMENTS LEADING TO THE BOHR’S MODEL OF ATOM
Ex 2.3.1 - Wave Nature of Electromagnetic Radiation
Ex 2.3.2 - Particle Nature of Electromagnetic Radiation: Planck’s Quantum Theory
Ex 2.3.3 - Evidence for the quantized* Electronic Energy Levels: Atomic spectra
Ex 2.4 - BOHR’S MODEL FOR HYDROGEN ATOM
Ex 2.4.1 - Explanation of Line Spectrum of Hydrogen
Ex 2.4.2 - Limitations of Bohr’s Model
Ex 2.5 - TOWARDS QUANTUM MECHANICAL MODEL OF THE ATOM
Ex 2.5.1 - Dual Behaviour of Matter
Ex 2.5.2 - Heisenberg’s Uncertainty Principle
Ex 2.6 - QUANTUM MECHANICAL MODEL OF ATOM
Ex 2.6.1 - Orbitals and Quantum Numbers
Ex 2.6.2 - Shapes of Atomic Orbitals
Ex 2.6.3 - Energies of Orbitals
Ex 2.6.4 - Filling of Orbitals in Atom
Ex 2.6.5 - Electronic Configuration of Atoms
Ex 2.6.6 - Stability of Completely Filled and Half Filled Subshells.
We cover all exercises in the chapter given below:-
Chapter 2 - 67 Questions with Solutions.
Other than given exercises, you should also practice all the solved examples given in the book to clear your concepts on Structure of Atom. Download the free PDF of Chapter 2 Structure of Atom and take the print out to keep it handy for your exam preparation.