ATOMIC MODELS

Atomic Models

Adriana Robles 3C

1803

450 BC

1926

1897

1911

1913

Democritus atomic model

Dalton atomic model

Thomson atomic model

Rutherford atomic model

Quantum atomic model (current)

Borh atomic model

Rutherford atomic model

Rutherford's atomic model, proposed in 1911, introduced the concept of a dense, positively charged nucleus at the center of an atom, surrounded by negatively charged electrons orbiting at a distance. This model revolutionized understanding, revealing the concentrated mass within the atom and laying the groundwork for modern atomic theory.

Quantum atomic model (current)

The Quantum Atomic Model, central to modern physics, views electrons as existing in probability distributions called orbitals around the nucleus. Heisenberg's uncertainty principle and wave-particle duality principles govern electron behavior, providing a more nuanced and accurate representation of the complex nature of subatomic particles compared to earlier atomic models.

Democritus atomic model

Democritus's atomic model, proposed around 400 BCE, posited that matter is composed of indivisible and indestructible particles called atoms. These atoms vary in size, shape, and arrangement, constantly in motion. Different substances arise from the combination of atoms, influencing properties. His ideas laid early foundations for modern atomic theory.

Dalton atomic model

Dalton's atomic model, introduced in the early 19th century, theorized that elements are composed of indivisible particles called atoms. These atoms, with unique masses, combine in fixed ratios to form compounds. Dalton's model emphasized the conservation of mass in chemical reactions, marking a significant advancement in understanding the nature of matter.

Borh atomic model

Bohr's atomic model, developed in 1913, refined Rutherford's model by suggesting that electrons orbit the nucleus in quantized energy levels. Electrons absorb or emit energy when transitioning between these levels, explaining the spectral lines of elements. This model contributed significantly to quantum mechanics and atomic theory.

19XX

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Thomson atomic model

Thomson's atomic model, proposed in 1897, depicted atoms as a positively charged "pudding" with negatively charged electrons embedded within it like raisins. This "plum pudding" model challenged the notion of indivisible atoms, suggesting a more dynamic structure. Thomson's model paved the way for later discoveries about the atom's complex internal composition.

19XX

Lorem ipsum dolor sit

Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit.