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Structure of Atom — Chapter Summary

CBSE · Class 11 · Chemistry

Summary of Structure of Atom for CBSE Class 11 Chemistry. Part of the CBSE Class 11 Chemistry syllabus. Atoms are made of smaller particles, and their.

163 questions72 flashcards12 formulas & key relations5 concepts

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Overview

Atoms are made of smaller particles, and their internal structure explains chemical behaviour, spectra, and bonding. The chapter traces the move from Dalton’s indivisible atom to modern quantum mechanical ideas. It covers the discovery of electrons, protons and neutrons; Thomson’s, Rutherford’s and

Key Concepts

The electron is a negatively charged

The electron is a negatively charged fundamental particle with charge -1.602176 × 10^-19 C and mass 9.1094 × 10^-31 kg. The proton is a positively cha

Thomson proposed that the atom

Thomson proposed that the atom is a sphere of positive charge with electrons embedded in it, like a plum pudding or watermelon model. It explained neu

Rutherford’s alpha

Rutherford’s alpha-particle scattering experiment on gold foil showed that most of the atom is empty space, while positive charge and almost all mass

A revolving charged electron should lose

A revolving charged electron should lose energy continuously and spiral into the nucleus. Classical calculations show this should happen in about 10^-

Electromagnetic waves travel in vacuum at

Electromagnetic waves travel in vacuum at 3.0 × 10^8 m/s and obey c = vλ. Radiation is described by frequency and wavelength, and wavenumber is also u

Learning Objectives

  • Understand the discovery and properties of electron, proton and neutron.
  • Describe Thomson, Rutherford and Bohr atomic models and their limitations.
  • Explain electromagnetic radiation, black body radiation and Planck’s quantum theory.
  • Describe the photoelectric effect and Einstein’s equation.
  • Interpret hydrogen line spectra using the Rydberg formula and Bohr model.

Frequently Asked Questions

What are the important topics in Structure of Atom for CBSE Class 11 Chemistry?
Key topics in Structure of Atom include The electron is a negatively charged, Thomson proposed that the atom, Rutherford’s alpha, A revolving charged electron should lose. Study these first, then practise questions on each for Class 11 exams.
How should I revise Structure of Atom for Class 11 exams?
Learn the core ideas first, then work through the 163 practice questions on Structure of Atom. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Structure of Atom

All CBSE Class 11 Chemistry Chapter Summary

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