The formula ν' = En/hc is known as the Rydberg formula and it represents the relationship between the energy levels (En) and the frequency (ν') of an electron in a hydrogen atom. It is used to calculate the spectral lines of hydrogen and other elements.
The Rydberg formula is derived from a combination of the Bohr model of the atom and the Balmer series. By equating the energy of an electron in the Balmer series to the energy of an electron in the Bohr model, we can derive the formula ν' = En/hc.
No, the Rydberg formula can be applied to any one-electron system, such as singly ionized helium or lithium. However, it is most commonly used for hydrogen as it was originally developed for this element.
The Rydberg formula is significant because it helps us understand the energy levels and spectral lines of atoms. It also played a crucial role in the development of quantum mechanics and our understanding of the structure of the atom.
The Rydberg formula is accurate only for the spectral lines of hydrogen and other one-electron systems. It does not take into account the effects of electron-electron interactions and is therefore not accurate for more complex atoms. Additionally, it does not account for relativistic effects at high energies.