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Niels bohr atomic theory3/16/2023 ![]() ![]() Radiation is emitted or absorbed when electrons move from one to another orbit.The smallest orbit will have the lowest energy.The energy of the orbit corresponds to its size.Each orbit has a certain amount of energy and size.The orbits are said to the “stationary orbits”.Electrons move around the nucleus in orbits or shells or energy levels it is the fixed circular path.The Bohr model consists of small negatively charged electrons, which orbits or revolve around the positively charged nucleus. The Bohr theory is one step ahead of Rutherford’s model, where it described electrons and different energy levels. He also explained that this orbital shell has a fixed energy level. The Bohr Model is the planetary model which states that electrons move in a specified path known as an orbital shell. It also explained the spectral emission lines of atomic hydrogen known as the Rydberg formula. Though it also has some pros and cons but considered as essential as this theory explained many points regarding atomic theory without any high-level maths. This model is the modification of the Rutherford atomic model and so sometimes known as the ‘Rutherford-Bohr Model’.īohr’s model of the atom is rooted in quantum mechanics. This theory was postulated by a Danish physicist named Neil Bohr in 1922 and has got its name as Bohr atomic model. The electron emission spectrum is a continuous spectrum. The electron emission spectrum is the line spectrum. The emission of radiation by electrons is of all frequencies. The emission of radiation by electrons is of specific frequencies. Rutherford's model did not describe discrete energy levels. ![]() Rutherford did not explain this relation of the orbital.īohr model was able to describe the discrete energy levels. This model also describes the relationship between the energy and size of the orbital, which says that "smallest orbital has the lowest energy". The Bohr atomic theory depicts that atom which as a positively charged, small nucleus surrounded by electrons that travel in a fixed circular path or orbits around the centre. ![]() ![]() Rutherford theory says that in the centre of an atom is a small positively charged nucleus, which is surrounded by the negatively charged electrons. Content: Bohr Vs Rutherford’s Atomic Models With reference to these theories, in this article, we will be highlighting the difference between the two, with a brief explanation of their work. Moving onto the 18th century when Dalton’s proposed the atomic theory and then passing in the 20th century with the discovery of subatomic particles, the plum pudding model, Rutherford model, Bohr model, and quantum theory, the journey was full of discoveries and information.īut the two milestones along the whole path is the Bohr atomic theory, which was the modified version of the Rutherford atomic model and so sometimes named as Rutherford-Bohr atomic model. So, it can be said that the Atomic theory has crossed the thousands of years, when it begins in the 5th century B.C., with Democritus theory “ matter consists of the indivisible, indestructible units that interact with each other“. Though Atomic theory is the concept that originated in ancient India and Greece. The word ‘atoms’ is derived from the Greek word ‘ atomos‘, meaning ‘ indivisible‘. The Atomic theory is the scientific explanation of the properties of atoms and matter that combines factors of physics, chemistry, and mathematics. We all are aware of the modern theory which says that “matter is made up of tiny particles known as atoms which in turn are made up of subatomic particles”. From the above statement, we can say that both the models of the atom differ in the way they explained the movements of electrons around the nucleus and their energy levels. ![]()
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