Describe Bohr's model of the atom.
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In atomic physics, the Bohr model depicts an atom as a small, positively charged nucleus surrounded by electrons. These electrons travel in circular orbits around the nucleus—similar in structure to the solar system, except electrostatic forces rather than gravity provide attraction.
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According to Bohr’s theory:
The atom consists of a small positively charged nucleus at its centre and surrounded by negatively charged electrons in a definite circular path.
The nucleus contains all the protons and neutrons of the atom.
The electrons of the atom revolve around the nucleus in definite circular paths known as orbits which are designated as K, L, M, N or numbered as n=1,2,3,4 outward from the nucleus. The orbits are also known as stationary orbits.
Each orbit is associated with a fixed amount of energy. The lowest energy level of the electron is called the ground state. Therefore, these orbits are also known as energy levels or energy shells.
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