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Activity Discussion Science & Technology Bohr’s atomic theory

  • Dikshu

    February 26, 2024 at 10:50 am
    Not Helpful

    Bohr’s atomic theory, also known as the Bohr model, was proposed by the Danish physicist Niels Bohr in 1913. It provided a new understanding of the structure of atoms and their electronic properties. Here are the key points of Bohr’s atomic theory:

    Electrons exist in specific energy levels: Bohr proposed that electrons orbit the nucleus of an atom in certain distinct energy levels or shells. Each energy level corresponds to a specific amount of energy that the electron possesses.

    Stable orbits: According to Bohr, electrons can only occupy certain stable orbits with specific energy values. These stable orbits are referred to as stationary states or stationary orbits.

    Energy quantization: Bohr suggested that electrons can only exist in these specific energy levels, and they cannot occupy the regions between them. This concept is known as energy quantization.

    Absorption and emission of energy: When an electron absorbs energy, it moves to a higher energy level or shell. Conversely, when an electron loses energy, it emits a photon of light and moves to a lower energy level.

    Radiation and stability: According to Bohr’s theory, electrons in atoms do not radiate energy while they are in stable orbits. They only emit or absorb energy when transitioning between energy levels.

    Explanation of atomic spectra: Bohr’s model successfully explained the discrete lines observed in atomic spectra. The energy differences between the electron orbits corresponded to specific wavelengths of light emitted or absorbed by the atom.

    Bohr’s atomic theory was a significant advancement in understanding atomic structure and provided a framework for explaining the behavior of electrons within atoms. However, it has since been superseded by more sophisticated models, such as the quantum mechanical model, which offer a more comprehensive and accurate description of atomic behavior.

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