Neils Bohr gave postulates to overcome the objections put forward against whose model of an atom?

Neils Bohr formulated his postulates to overcome the objections against the Rutherford model of the atom. The Rutherford model, proposed by Ernest Rutherford in 1911, depicted the atom as a small, dense nucleus surrounded by electrons in orbit, similar to a solar system. However, this model had several shortcomings, such as failing to explain why electrons do not spiral into the nucleus due to electromagnetic attraction and not providing a coherent explanation for atomic stability and spectral lines.

Bohr's postulates introduced the idea that electrons occupy specific energy levels or "orbits" around the nucleus, and that they can only transition between these levels by absorbing or emitting quanta of energy, thus addressing the stability of atoms and the discrete nature of atomic spectra. This marked a significant advancement in atomic theory, leading to the development of quantum mechanics.