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0.3.
What are the postulate of Bohr's model? Explain
Answers
Answer:
postulates:
1) In an atom, electrons(negatively charged) revolve around the positively charged nucleus in a definit circular path called orbits or shells.
2) Each orbit or shell has a fixed energy and these circular orbits are known as orbital shells.
3) The energy levellevels are represented an integer(n=1, 2,3) . known as the quantum number. This range of quantum number starts from nucleus side with n=1 having the lowest level. The orbits n=1, 2,3,4...are assigned as K, L, M, N. .. shells and when an electron attains the lowest energy level, it is said to be in the ground state.
4) The electrons in an atom move from a lower energy level to a higher energy level by gaining the required energy and an electrons moves from a higher energy level to lower energy level by losing energy.
Explanation:
The Bohr's model postulates that electrons orbit the nucleus at fixed energy levels. Orbits further from the nucleus exists at higher energy levels. when electrons returned to a lower energy level, they emit energy in the form of light.