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Jun 28, 2013 · Bohr figured out the basics of how atoms hook up to make molecules. He explained the mysterious repetition of properties displayed by the periodic table of the chemical elements. And most...
- Atomic Anatomy
In the years that followed, the atom-with-nucleus served as...
- Atomic Anatomy
Jun 28, 2024 · Bohr model, description of the structure of atoms proposed in 1913 by the Danish physicist Niels Bohr. The Bohr model of the atom, a radical departure from earlier, classical descriptions, was the first that incorporated quantum theory and was the predecessor of wholly quantum-mechanical models.
- The Editors of Encyclopaedia Britannica
Bohr's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells, or orbits, around the nucleus. Bohr's model calculated the following energies for an electron in the shell, n : E ( n) = − ⋅ .
The Bohr model of the hydrogen atom explains the connection between the quantization of photons and the quantized emission from atoms. Bohr described the hydrogen atom in terms of an electron moving in a circular orbit about a nucleus. He postulated that the electron was restricted to certain orbits characterized by discrete energies.
- Paul Flowers, Edward J. Neth, William R. Robinson, Klaus Theopold, Richard Langley
- 2018
In 1913, the Danish physicist Niels Bohr proposed a model of the electron cloud of an atom in which electrons orbit the nucleus and were able to produce atomic spectra. Understanding Bohr's model requires some knowledge of electromagnetic radiation (or light).
Helium's Bohr model shows that the first two electrons are in the same energy level. But what about elements with more electrons? It turns out that the first energy level holds a maximum of two electrons.
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Bohr turned to Planck's quantum theory to explain the stability of most atoms. He found that the ratio of energy in electrons and the frequency of their orbits around the nucleus was equal to...
