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  2. Bohr model - Wikipedia

    en.wikipedia.org/wiki/Bohr_model

    For the hydrogen atom Bohr starts with his derived formula for the energy released as a free electron moves into a stable circular orbit indexed by : [28] = The energy difference between two such levels is then: = = Therefore, Bohr's theory gives the Rydberg formula and moreover the numerical value the Rydberg constant for hydrogen in terms of ...

  3. Bohr radius - Wikipedia

    en.wikipedia.org/wiki/Bohr_radius

    Nevertheless, the Bohr radius formula remains central in atomic physics calculations, due to its simple relationship with fundamental constants (this is why it is defined using the true electron mass rather than the reduced mass, as mentioned above).

  4. Energy level - Wikipedia

    en.wikipedia.org/wiki/Energy_level

    An equivalent formula can be derived quantum mechanically from the time-independent Schrödinger equation with a kinetic energy Hamiltonian operator using a wave function as an eigenfunction to obtain the energy levels as eigenvalues, but the Rydberg constant would be replaced by other fundamental physics constants.

  5. Hydrogen atom - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_atom

    Depiction of a hydrogen atom showing the diameter as about twice the Bohr model radius. (Image not to scale) A hydrogen atom is an atom of the chemical element hydrogen.The electrically neutral hydrogen atom contains a nucleus of a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force.

  6. Niels Bohr - Wikipedia

    en.wikipedia.org/wiki/Niels_Bohr

    The Bohr model's semicentennial was commemorated in Denmark on 21 November 1963 with a postage stamp depicting Bohr, the hydrogen atom and the formula for the difference of any two hydrogen energy levels: =. Several other countries have also issued postage stamps depicting Bohr. [168]

  7. Degenerate energy levels - Wikipedia

    en.wikipedia.org/wiki/Degenerate_energy_levels

    The time-independent Schrödinger equation for this ... The energy levels in the hydrogen atom ... is the Bohr radius. The total fine-structure energy shift ...

  8. Atomic electron transition - Wikipedia

    en.wikipedia.org/wiki/Atomic_electron_transition

    An electron in a Bohr model atom, moving from quantum level n = 3 to n = 2 and releasing a photon.The energy of an electron is determined by its orbit around the atom, The n = 0 orbit, commonly referred to as the ground state, has the lowest energy of all states in the system.

  9. Bohr–Sommerfeld model - Wikipedia

    en.wikipedia.org/wiki/Bohr–Sommerfeld_model

    This was a significant step in the development of quantum mechanics. It also described the possibility of atomic energy levels being split by a magnetic field (called the Zeeman effect). Walther Kossel worked with Bohr and Sommerfeld on the Bohr–Sommerfeld model of the atom introducing two electrons in the first shell and eight in the second. [8]