In practice, if we observe the spectroscopy of Hydrogen under high resolution machine, we can see multiple lines instead of single line. The model was an expansion on the Rutherford model overcame (Coffey, Universe Today).Bohr's contributions to the study of quantum mechanics are forever memorialized at the Institute for Theoretical Physics at Copenhagen University, which he helped found in 1920 and headed until his death in 1962.

In practice, if we observe the spectroscopy of Hydrogen under high resolution machine, we can see multiple lines instead of single line. The model was an expansion on the Rutherford model overcame (Coffey, Universe Today).Bohr's contributions to the study of quantum mechanics are forever memorialized at the Institute for Theoretical Physics at Copenhagen University, which he helped found in 1920 and headed until his death in 1962.

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Postulates of Dalton’s Atomic Theory The main points of Dalton’s atomic theory, an explanation of the structure of matter in terms of different combinations of very small particles, are given by the following postulates: 1. An atom is an extremely small particle of matter that retains its identity during chemical reactions. An element is a type of matter composed of only one kind of atom, each atom of a given kind having the same properties. Thus, the atoms of a given element have a characteristic mass. A compound is a type of matter composed of atoms of two or more elements chemically combined in fixed proportions.

The relative numbers of any two kinds of In a transition from its initial state to its final state, a photon is either emitted or absorbed and the energy of the photon is equal to the difference in the energy of the two states (equation 2) E=energy lost or gained by atom h f= energy of emitted or absorbed photon h= Planck’s constant h = 6.63x10-34 J.s f= frequency of electromagnetic radiation (photon) Ei= total energy of electron in initial state ni Ef =total energy of electron in final state nf Problems with the Bohr Model: 1. It violates the Heisenberg Uncertainty Principle because it considers electrons to have both known radius and orbit.

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Bohr's greatest contribution to modern physics was the atomic model.

The Bohr model shows the atom as a small, positively charged nucleus surrounded by orbiting electrons.

Niels Hendrik David Bohr was one of the foremost scientists of the 20th century. His father, Christian, was a professor at the University of Copenhagen and his brother, Harold, was a great mathematician. In 1907, he earned his Ph D went to England to study with J. He became the director of the university's Institute for Theoretical Physics in 1920, to which he attracted many world-renowned physicist.

The Nobel prizewinning physicist was known for his development of the theory of atomic fission that led to the development of the atomic bomb. In 1922, he won the Nobel Prize for his work on the atomic structure.

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