Chapter 4 · Class 11-12 & JEE/NEET
Atomic Structure
59 topics in 14 parts
Key ideas
Diagnostic Comparison & Property Matrix
| Parameter / Feature | Standard State / Condition A | Altered State / Condition B |
|---|---|---|
| Driving Force | Thermodynamic control (more stable product) | Kinetic control (lower activation barrier) |
| Solvent Dependency | Polar protic solvent stabilizes charge separation | Polar aprotic solvent accelerates bare nucleophilicity |
| Temperature Influence | High temperatures favor elimination / endothermic | Mild temperatures favor addition / exothermic |
| Common Pitfall | Overlooking rearrangement or stereochemical inversion | Neglecting boundary limits or stoichiometric coefficients |
All 59 topics in Atomic Structure
Discovery of Subatomic Particles
- Cathode Rays & Electron Discovery
- e/m Ratio & Millikan Oil Drop Experiment
- Anode Rays & Proton Discovery
- Neutron Discovery
Atomic Composition & Nuclides
- Atomic Number & Mass Number
- Isotopes & Isobars
- Isotones, Isodiaphers & Nuclear Isomers
- Isoelectronic Species
- Moseley's Law & Atomic Number
Atomic Models & Early Theories
- Thomson Model of Atom
- Rutherford Nuclear Model & Alpha Scattering
- Drawbacks of Rutherford Model
Electromagnetic Radiation & Planck's Quantum Theory
- Wave Nature & Characteristics of Electromagnetic Radiation
- Electromagnetic Spectrum & Wavenumber
- Planck's Quantum Theory & Blackbody Radiation
- Photon Energy & Momentum
Photoelectric Effect
- Work Function & Threshold Frequency/Wavelength
- Stopping Potential & Kinetic Energy
- Einstein's Photoelectric Equation
- Photoelectric Graph Analysis
Bohr's Model & Applications
- Postulates of Bohr Model
- Radius of Bohr Orbits
- Velocity & Orbital Frequency of Electron
- Energy of Electron in Hydrogenic Species
- Number of Revolutions & Waves in Orbit
- Bohr-Sommerfeld Model
- Limitations of Bohr Model
Hydrogen Spectrum & Atomic Spectra
- Continuous & Discontinuous Spectra
- Spectral Series of Hydrogen
- Rydberg Formula & Wavelength Calculations
- Number of Spectral Lines
- Ionization Energy & Enthalpy
Dual Nature of Matter
- De Broglie Hypothesis & Wavelength Equation
- Wavelength of Accelerated Particles
- Dual Analysis of Photoelectrons
Heisenberg's Uncertainty Principle
- Position & Momentum Uncertainty
- Energy & Time Uncertainty
- Physical Significance & Applications
Quantum Mechanical Model of Atom
- Schrödinger Wave Equation
- Wave Function & Probability Density
- Particle in a One-Dimensional Box
Radial & Angular Wave Functions
- Radial Wave Function & Radial Probability Density
- Angular Wave Function & Probability Plots
- Radial Nodes, Angular Nodes & Total Nodes
Orbitals & Quantum Numbers
- Principal, Azimuthal & Magnetic Quantum Numbers
- Electron Spin & Spin Quantum Number
- Shapes & Spatial Orientation of Atomic Orbitals
- Orbital Angular Momentum & Spin Angular Momentum
- Relative Energies of Orbitals
- Allowed Quantum Number Combinations
Electronic Configuration of Atoms
- Aufbau Principle & (n+l) Rule
- Pauli Exclusion Principle
- Hund's Rule of Maximum Multiplicity
- Neutral Atoms & Ions
- Exceptional Configurations of Cr & Cu
- Stability of Half-Filled & Fully-Filled Subshells
- Effective Nuclear Charge & Slater's Rules
Magnetic Properties
- Paramagnetism & Diamagnetism
- Spin-Only Magnetic Moment Calculation