Understanding the 5 Fundamental Atomic Theories

Explore the five key atomic theories that shaped modern chemistry, from Dalton to Quantum Mechanics.

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John Dalton's Atomic Theory states that all matter is composed of indivisible atoms. J.J. Thomson's Model introduced the electron and proposed the 'plum pudding' model. Ernest Rutherford's Theory discovered the nucleus and nucleus-centric structure. Niels Bohr's Model posited that electrons orbit the nucleus in fixed paths. Quantum Mechanical Model, developed by various scientists, depicts electrons in probabilistic orbitals rather than fixed paths.

FAQs & Answers

  1. What is John Dalton's Atomic Theory? John Dalton's Atomic Theory states that all matter is composed of indivisible atoms.
  2. What did J.J. Thomson contribute to atomic theory? J.J. Thomson introduced the concept of the electron and proposed the 'plum pudding' model of the atom.
  3. How did Ernest Rutherford change atomic theory? Ernest Rutherford discovered the nucleus and proposed a central nucleus structure for the atom.
  4. What distinguishes the Quantum Mechanical Model from earlier models? The Quantum Mechanical Model depicts electrons in probabilistic orbitals rather than fixed paths.

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