Atoms

This section discusses the atomic structure, including the historical development from Thomson's to Rutherford's models and the introduction of Bohr's model, highlighting the quantized nature of electron orbits.

Introduction

This section discusses the evolution of atomic theory, emphasizing key contributions by J. J. Thomson and Ernest Rutherford, and introduces the fundamental structure of the atom.

Alpha Particle Scattering And Rutherford's Nuclear Model Of The Atom

This section discusses the discovery of the atomic nucleus through alpha particle scattering experiments, leading to Rutherford's nuclear model of the atom.

Alpha-Particle Trajectory

The section discusses the trajectory of alpha-particles in the context of their scattering by nuclei, leading to insights about atomic structure.

Electron Orbits

This section discusses the Rutherford nuclear model of the atom, focusing on the dynamics of electron orbits around the positively charged nucleus.

Atomic Spectra

Each element emits a characteristic spectrum of radiation, with hydrogen exemplifying this principle through its distinct emission and absorption line spectra.

Bohr Model Of The Hydrogen Atom

The Bohr model provides a quantum mechanical framework for understanding the hydrogen atom's structure, introducing quantized orbits for electrons and explaining atomic spectra.

Energy Levels

The energy levels of an atom are quantized, with the electron in the lowest energy state (ground state) being most stable.

The Line Spectra Of The Hydrogen Atom

The line spectra of hydrogen atoms arise from electron transitions between energy levels, leading to the emission of distinct wavelengths of light.

De Broglie's Explanation Of Bohr's Second Postulate Of Quantisation

Louis de Broglie's hypothesis provided insight into the quantisation of angular momentum in atomic models, linking wave-particle duality to Bohr's second postulate.

Summary

This section provides an overview of atomic models, highlighting the contributions of J.J. Thomson, Ernest Rutherford, and Niels Bohr in the understanding of atomic structure.