Fundamentals of Atomic Structure and Periodic Trends

Revision sheet excerpt

Course Outline

  1. Atomic theory and models
  2. Subatomic particles and isotopes
  3. Electron configuration and shells
  4. Ionization energy trends
  5. Periodic table blocks
  6. Configuration exceptions and noble gas notation
  7. Ions, free radicals and periodic trends

1. Atomic theory and models

Key Concepts & Definitions

  • Atomos : Atoms are defined as indivisible particles proposed by Democritus for matter’s basic units.
  • Dalton’s atomic theory : Dalton’s theory says elements have identical atoms, different elements have different atoms, and atoms combine in whole-number ratios.
  • Thomson’s atomic model : Thomson’s model treats the atom as containing sub-atomic particles, implying the atom is divisible.
  • Rutherford’s nuclear model : Rutherford’s model explains the atom as mostly empty space with a tiny dense positive nucleus.
  • Bohr’s atomic model : Bohr’s model states electrons occupy fixed energy levels and can change levels by emitting or absorbing energy.

Essential Points

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Quiz preview

1. Which statement best describes Dalton’s atomic theory?

2. What did Rutherford’s gold foil experiment support about the atom?

3. What is the atomic number of an atom?

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Flashcards preview

Atomic theory — founder?

Democritus proposed atoms as indivisible particles.

Dalton’s atomic theory — claim?

Atoms of the same element are identical; different elements have different atoms.

Thomson’s model — feature?

Atom contains electrons within a positive sphere.

Rutherford’s model — discovery?

Nucleus is dense and positively charged.

Bohr’s model — electrons?

Electrons occupy fixed energy levels.

Cathode ray tube — deflects?

Electrons toward positive, protons toward negative plates.

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The revision sheet covers the essential concepts of Fundamentals of Atomic Structure and Periodic Trends. It is organized by topic to facilitate learning and memorization, with key definitions, explanations and summaries.

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The quiz contains 14 multiple-choice questions with detailed corrections and explanations for each answer. Ideal for testing your knowledge and identifying gaps.

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