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Atomic theory model4/10/2024 ![]() ![]() The second was the law of definite proportions. The first was the law of conservation of mass, formulated by Antoine Lavoisier in 1789, which states that the total mass in a chemical reaction remains constant (that is, the reactants have the same mass as the products). ![]() John Dalton near the end of the 18 th century, two laws about chemical reactions emerged without referring to the notion of an atomic theory. It was not until the 19th century that the idea was embraced and refined by scientists, as the blossoming science of chemistry produced discoveries that could easily be explained using the concept of atoms. Because of this, they could not convince everybody, so atomism was but one of a number of competing theories on the nature of matter. However, these ideas were founded in philosophical and theological reasoning rather than evidence and experimentation. The word "atom" was coined by the philosophers Leucippus and his pupil Democritus. The idea that matter is made up of discrete units is a very old one, appearing in many ancient cultures such as Greece and India. By the early 20 th century, this centralized matter came to be recognized as the nucleus of the atom. But, through more experimentation, it was found that most of the matter within atoms is centralized. At first the thought was that electrons floated throughout the atom, like pieces of fruit floating in pudding, as if the atoms were simply soft blobs of matter. ![]() When electrons were first discovered, scientists knew they were part of the atom, but they didn't know where they belonged. One of these new discoveries came at the end of the 19 th century, with the discovery of a subatomic particle, called an electron. This lead to the first atomic theory, which stated things like, all matter is made up of atoms, elements are composed of only one type of atom, and atoms can combine with other atoms to make more complex substances. "Near the end of the 18 th century, new ways to conduct experiments helped researchers build their scientific understanding of atoms. 380 B.C.), who named those particles atoms. A proponent of the ultimate particle concept was the philosopher Democritus (c.470-c. As with any scientific theory, an atomic theory is based on scientific evidence available at any given time and serves to suggest future lines of research about atoms. My new model will solve the confusions about MOT, VBT, VSEPR theory thus will explain the proper reasons of chemical bonding and many other unsolved questions of chemical combination and bond dissociation.Ītom, Structure, Orbital, Molecule, ModelĪn atomic theory is a model developed to explain the properties and behaviors of atoms. In my new atomic model, I have presented the definite position of electron/electron pairs in the different orbital (energy shells) with the identical distance among all nearby electron pairs and the degree position of electrons/electron pairs with the Center Point of Atoms (nucleus) in atomic structure, also in the molecular orbital. Even there are so many question arise about the chemical bond, MOT, VBT, VSEPR theory etc. The model of atoms that scientists use today has survived and been modified by untold numbers of experiments and will be subjected to other such tests in the future. ![]() Those models that pass the test of experimentation survive, while those that do not are abandoned. How, then, can scientists be so completely certain of the existence of atoms and of the models they have created for them? The answer is that models of the atom, like other scientific models, can be tested by experimentation. Some of the very best microscopes have produced images of groups of atoms, but no actual picture of an atom yet exists. One of the most remarkable features of atomic theory is that even today, after hundreds of years of research, no one has yet seen a single atom. This first atomic theory explained a lot, but as science continued to advance, new information and new discoveries made it clear that the theory needed to be updated. The concept of atom has undergone numerous changes in the history of chemistry, most notably the realization that atoms are divisible and have internal structure Scientists have known about atoms long before they could produce images of them with powerful magnifying tools because atoms could not be seen, the early ideas about atoms were mostly founded in philosophical and religion-based reasoning. New Atomic Model with Identical Electrons Position in the Orbital's and Modification of Chemical Bonds and MOT ![]()
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