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What did Bohr discover?

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Quick Answer

Niels Bohr, the 20th-century Nobel laureate Danish physicist, discovered and developed a realistic model of the atom, known as the Bohr model. Additionally, he developed the principle in quantum mechanics known as complementarity.

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Full Answer

In the Bohr atomic model, a small nucleus of protons and neutrons is surrounded by electrons that maintain separate orbits, repelled by electronegativity. The electrons in this model can "jump" from one orbit to another when interacting with other energy sources.

The Bohr model was a combination of the Rutherford model of the atomic nucleus and Planck's quantum theories. It was largely supplanted over time by other models of atomic behavior, though it is used as a simple and fundamental description.

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Related Questions

  • Q:

    Who developed the idea of electron shells?

    A:

    The idea of electron shells was developed by Niels Bohr in his 1913 model of the atom, which places electrons into stable orbits around the nucleus. The Bohr model was a modification of the Rutherford model, which did not require that electrons move in orbits of fixed size and energy.

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  • Q:

    How do you draw a Bohr model?

    A:

    To draw a Bohr model of an atom, first find the number of protons, neutrons and electrons in the atom from its atomic weight and atomic number. After that, place the neutrons and the protons in the nucleus, and draw the electrons in their designated shells.

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  • Q:

    What is the Bohr model for silver?

    A:

    The Bohr model for silver explains the number of electrons, protons and neutrons that are present in the atom, and it diagrams the placement of the electrons within silver’s five energy levels. Silver’s Bohr model indicates that there are 47 protons and 61 neutrons in its nucleus, according to Pennsylvania County Schools. Its 47 electrons are broken up into five energy levels.

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  • Q:

    How do I make a Bohr model of the boron atom?

    A:

    The Bohr model of the boron atom has a nucleus in the center and two energy levels, also known as shells, or orbitals, around the outside. Two electrons orbit the first energy levels and three orbit the second. Five protons and six neutrons occupy the nucleus.

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