Neils Bohr Explained the Stability of Atom
In order to explain the stability of atom and overcome the objection against Rutherford's model of atom, Neils Bohr gave a new arrangement of electrons in the atom in 1913. According to Neils Bohr :
1.The electrons could revolve around the nucleus in only "certain orbits" (or "certain energy levels"),each orbit having a different radius.The electrons in each orbit have a characteristic amount of energy.The electrons which are in orbits close to the nucleus have low energy while those in orbits farther from the nucleus have higher energy.
2.When an electron is revolving in a particular orbit or particular energy level around the nucleus,the electron does not radiate energy (does not lose energy), even though it has accelerated motion around the nucleus. And since the electrons do not lose energy while revolving in certain permitted orbits, they do not fall into the nucleus, and hence the atom remains stable. Please note that the circular paths or orbits around the nucleus (where the movement of electrons takes place), are also known as "energy levels” or "electron shells".
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Structure of the Atom - Notes
1. Drawback of Rutherford’s Model of the Atom
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2. Rutherford’s Experiment - Discovery of Nucleus
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9. How to learn naming Chemical Formulae?
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10. Limitations of Rutherford's model of the atom
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12. Arrangement Of Electrons In The Atoms
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17. All about Names of the Chemical Elements
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18. Structure of The Atom - Study Points
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21. For the symbols H, D and T,tabulate three sub-atomic particles found in each of them.
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25. The Physical Properties of the Isotopes of an Element are Different
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27. Rules for writing of distribution of electrons in various shells for the first 18 elements
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28. Electronic Configurations of First 20 Elements
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33. Comparison between Proton, Neutron and Electron
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38. All the Isotopes of an Element Have Identical Chemical Properties
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42. Relationship Between Mass Number and Atomic Number
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46. Electronic Configurations of Elements
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47. Applications of Radioactive Isotopes
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50. Neils Bohr Explained the Stability of Atom
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