Development of Atomic Model Over Time

5. quantum Mechanies Atomre theay Csernor Hersonbery and erwin schrodinger). the reason quantum mechanical theory was developed was to perfect Bohr's cupomac theory. the theory of quantum mechanics was perfected by erurn Schrodinger who was a perfected by erwen schrodinger who was a physicist From Austria and nobed prae winner in Physics In 1933. Development of modern atomse theory based on de Brogire's hypothesis. According to lours de Brogre, dualrom applies to electrons, namely that electrons are not just particies, but also move Like waves and have trajectorios that are also waves. Afta Rutherford's theory began to spread and be used, scren frott agreed that and be used fcrentists agreed that atto be used, scrapists agreed that an atom consitos of electron and an atomre nudeus - Bohr's atomic theery originatece from the Weaknesses of rutherfords a tomic theory, this Weaknesses it that the electron trajectorres presented by rutherford are not yet perfect for explanaring the structure of an atom because they are considered to be in conflict with maxwell's copessical electrodynamic theory. From the weakness Bohr attemples to develop and perfer Rutherford's atomic theory by Using futher ford's Nuclear atomic moded and planck's quantum theory and proposed anatomic theory which Currently & currently known as Bohr's Atomic theory Rutherford and his fro assistants discovered the Atomic nudeus in iglo the atomic nudeus has a radias. the theory discovered by tuther Ford cams from experiments on bombarding the atomic nucler of gold plates with alpha particles Ca Parfele with a mass four times the mass of a hydrogen atom and a Positive charge turece the charge of an electron). This experiment is Called Gerger- Marsden. In its development, thomson corrected the Shor comings of dalton's prevrous atomic theray. In 1897 thomson drecovered negatively charged Particles called electrons. The content of thomson's afomic theory is a so48 ball or billiare ball confaining Partides or Several Negative 5 will be spread electrons these colectrons. across the ball Like rarsins on bread. thomson's atomic theory can be called the raisin bread theory. Dhalton's Atomic theory is based on furo laws, namely Lavorster's law of the Law of Conservation of mars and proust's Permanent arrangement. law of the law of Follouring are the characteristics of the palfonatom: a) Atoms as elementary particles. b) Cannot be changed c) Fixed werght fations in compounds 9) Chemical Reactions as atom exchange e) single and Indivisible Atom. CHEMISTRY & Brochemistry ALOM Atom is the smallest Unit of a chemical element that retaints its identity and unique Properbes. Atomt consist of three busse typer of particles. positively charged protons, neutral neutrons, and negatively charged electrons. The atomre structure is the basic unit of matter consisting of can atomic nucleus and electrons with a negative charge a doud of and its surroundings. In the nucleus of every atom there Is a mixture. Development of atomre theory Figures in the development of aformie theory had different thoughts the following are the figures in the development of afomic theory. 1. theory from Dal fon (John dalfony 2. Peony Atom thomson (sir gozoph Johe thomsonl 3. Theery Atom Rutherford (Ernest Rutherford) 4. Reory Atom Bohr (Niels Bohr) 5.Thory Atom macarica Kelanfum