contribution of niels bohr in periodic table
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he gives the theoritical explanation of perodic table and the laws also
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Niels Bohr applied his atomic theory to the periodic table of elements. He showed that chemical properties of an element resulted mainly from the behavior of valence electrons, the electrons occupying the highest stable orbit. This was an important step in the creation of the field of quantum chemistry. Also, Bohr predicted that the undiscovered atomic element 72 would resemble zirconium. His prediction was correct and Hafnium was discovered in 1923. The element took its name from Hafnia, the Latin version of Copenhagen, the home town of Bohr.
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