What Key Discoveries Shaped the Atomic Model?

Explore the pivotal discoveries that formed the foundation of modern atomic theory.

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Key discoveries that led to the atomic model include Dalton’s atomic theory proposing that atoms are indivisible units, Thomson’s discovery of the electron suggesting internal structure, Rutherford’s gold foil experiment revealing a central nucleus, and Bohr’s model introducing fixed orbits for electrons. These findings collectively unveiled the complex structure of the atom, forming the foundation of modern atomic theory.

FAQs & Answers

  1. What is Dalton's atomic theory? Dalton's atomic theory states that atoms are indivisible and indestructible particles that make up all matter. It laid the groundwork for modern chemistry.
  2. What was Thomson's contribution to the atomic model? Thomson discovered the electron, suggesting that atoms have an internal structure and consist of smaller charged particles.
  3. How did Rutherford's experiment change our understanding of the atom? Rutherford's gold foil experiment showed that atoms have a small, dense nucleus at their center, leading to the understanding of the atom's structure.
  4. What is Bohr's model of the atom? Bohr's model introduced the concept of fixed orbits for electrons, suggesting that electrons travel around the nucleus in specific energy levels.

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