BOHR’S MODEL OF ATOM MADE BY:-GROUP-1{CHEMISTRY} About The Scientist……. HE was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory‚ for which he received the Nobel Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research. He was born in Copenhagen on 7 October 1885. He wrote many books like the theory of spectra and atomic constitution‚ atomic theory and the description of nature. NEILS BOHR (1885-1962)
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Planets of our Solar System The Earth: The earth is the fifth largest planet of the solar system. The life is possible on the earth because its gravity is sufficient to hold atmosphere and best conditions for sustaining life. It contains a large amount of water in the form of oceans. 71% parts of the total area is covered with water and the remaining 29% is covered with land. The temperature of the centre of the earth is 2000° C. The circumference of the earth is 40‚000 km. The earth completes
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"Prediction is very difficult‚ especially about the future". The words are by Niels Bohr‚ the father of the atom as we know it. A Man of Many Interests I. Niels Bohr‚ ironically known as ’the Pope’ among his colleagues‚ was born in 1885‚ in Copenhagen‚ where he lived for most of his life. He created the Institute for Theoretical Physics‚ now known as the Niels Bohr Institute‚ where he mentored and collaborated with the best scientists of his time. II. Bohr’s interests ranged
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combination which were in existence at that time. However‚ he made an error in assuming that the simplest compound of two elements must be binary‚ formed from atoms of each element in a 1:1 ratio‚ and his system of atomic weights was not very accurate for he gave oxygen an atomic weight of seven instead of eight. Despite the errors‚ Dalton’s theory provided a logical explanation of concepts‚ and led the way into new fields of experimentation. J. J. Thomson In 1904 Thomson suggested a model of the atom
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As scientists started researching atoms‚ many had different ideas on what was actually going on inside the atoms and what the atoms looked like. A few of these scientists were Niels Bohr‚ J.J. Thompson‚ John Dalton‚ and Earnest Rutherford. These four men defined what atomic theory was with all the research and experiments they did. They each came up with ideas about atoms. John Dalton: John Dalton was born September 6‚ 1766. Dalton’s father worked as a weaver‚ his father owned a small plot of land
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entrance to the very stage happened when he was in Grade IV. War and all the fears that it brought made Sir Hidalgo forget the English language. Survival took over his mind‚ instead of sentences and phonetics. The education in Batanes‚ as with most places‚ continued after the World War II. Everything he knew about the English language was forgotten‚ erased by fear and survival. He was entering fresh in the academic world. Although he forgot the language‚ it was fine for him. But this changed
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Chapter 14 Section 2 Notes: The Sun The sun produces energy through nuclear fusion. In the process of nuclear fusion‚ two atomic nuclei combine‚ forming a larger‚ more massive nucleus and releasing energy. Within the sun‚ hydrogen atoms join together to form helium. Such conditions exist in the sun’s core‚ or central region. The sun’s interior consists of the core‚ the radiation zone‚ and the convection zone. The sun’s energy is produced in its central core. The radiation zone is a region
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Mercury - Smallest and innermost planet. Venus – Second planet from the sun. Rotates in the opposite direction than most other planets. Earth – Third planet from the sun. Known as the only planet to harbor life. Mars – Fourth planet from the sun and the second smallest in the solar system. Jupiter – The fifth planet from the sun and the largest in the solar system. Saturn – Sixth planet from the sun. Only planet with a ring around it. Uranus – Seventh planet from the sun. Third largest planetary radius
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Earth is the only planet in our solar system that sustains life‚ and therefore one of the most intriguing planets because of its capabilities. Each of the seven other planets that orbit the same sun as Earth is interesting in its own way. Some planets share similar characteristics to those found on Earth‚ while other planets are completely different. An analysis of these terrestrial bodies‚ using comparative planetology‚ will allow us examine these qualities. However‚ before beginning such a process
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The sun is a star. It is the star round which the earth and other planets revolve. In a way‚ we can say that sun is the head of solar family or solar system. Compared with the millions of other stars‚ the sun is a medium sized star and of average brightness. The sun appears to be larger and brighter because it is much more nearer to the earth than any other star. Thus‚ the star nearest to the earth is the sun. Though sun is the nearest star to the earth‚ even then it is at a distance of 150 x 106
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