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The modern atom is explained by quantum mechanics.
It is true that an atom has a nucleus. As for which model of the atom is thought to be true, at the present time we use a model based upon quantum mechanics which differs significantly from the early Rutherford or Bohr atomic models.
No. Before the Bohr model ,the most accepted model was the Rutherford model of the atom. Before that there was the plum-pudding model.
During the 1920s Austrian physicist Erwin Schrödinger (1887-1961) introduced what came to be known as the wave mechanical model, also known as the particle-wave hypothesis.
B, Quantum Theory!
Today the model of atom is based on quantum mechanics.
The Bohr Model, and its the basis of quantum theory
Improved knowledge of the atom via new experiments and development of new theories (e.g. quantum mechanics).
Well, the conventional system of quantum mechanics can also be known as the Standard Model of Particle Interaction, or the Standard Model for short.
The modern atom is explained by quantum mechanics.
Improved knowledge of the atom via new experiments and development of new theories (e.g. quantum mechanics).
Quantum mechanics.
The atomic model of Bohr is not a quantum model.
Neils Bohr's most significant contributions to science were creating the Bohr model of the atom and furthering the understanding of quantum mechanics.
It is true that an atom has a nucleus. As for which model of the atom is thought to be true, at the present time we use a model based upon quantum mechanics which differs significantly from the early Rutherford or Bohr atomic models.
Bohr came up with the planetary model for the hydrogen atom - that began the physical explanation of quantum mechanics invented by Planck.
Quantum Mechanics was invented by Max Plank - and Einstein had nothing to do with it, in fact Einstein was uncomfortable with Quantum Mechanics for the entirety of his career.