According to Bohr's model, the electrons are found revolving around the nucleus in orbits or energy levels around the nucleus. Thus option D is correct.
The Bohr model of the atom has been given by Niels Bohr and Ernest Rutherford in 1913. The model proposed has been analogous to the arrangement of the solar system.
According to the model, the atom has been consisted of the centrally charged concentrated nucleus. The nucleus has resembled the sun. The electrons are the negatively charged species that revolves around the nucleus in their specified energy level, attracted by the electrostatic forces.
Thus, according to Bohr's model, the electrons are found revolving around the nucleus in orbits or energy levels around the nucleus. Thus option D is correct.
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