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The ion is left in a highly excited state which may then autoionize thereby inverting the dielectronic recombination and converting the process into a simple scattering event or it may radiatively decay when one of the excited electrons radiatively. V-JSAT2-May-15SUN3-May-15MON4-May-15V-BTUE5-May-15V-L/BV-JWED6-May-15THU7-May-15FRI8-May-15V-L/BV-JSAT9-May-15SUN10-May-15MON11-May-15V-BTUE12-May-15V-L/BV-J13-May-15THU14-May-15FRI15-May-15V-L/BV-JSA Energies in Relation to Periodic Table. 3d. 4f. 1s. 2p. http://www.docstoc.com. Energies of Orbitals. E. Hydrogen. ei. Everything other than Hydrogen. Questions: . What . is the difference between the two? Why do you think hydrogen is different?. Wave-Particle Duality. JJ Thomson won the Nobel prize for describing the electron as a particle.. His son, George Thomson won the Nobel prize for describing the wave-like nature of the electron.. The electron is a particle!. Model. The “orbitals” we know from general chemistry are wave functions of “hydrogen-like” atoms. Hydrogen-like. : any atom, but it has . only. one electron. Atomic charge . Z. can be anything in other words. Electron Pairs. Recall that in the Lewis/electron dot diagram, only valence electrons are shown. We consider the shell that they are in to be the valence shell. . These valence electrons give the element its chemical properties, and therefore determine its ability to form chemical bonds. . The student will investigate and understand that the placement of elements on the periodic table is a function of their atomic structure. The periodic table is a tool used for the investigations.. Key Concepts:. What are the 3 major parts of an atom?. Proton . Neutron . Electron. Parts of an Atom. Another Model. SIMPLIFIED MODEL.. PROTON. Protons are positively charged particles found in the atomic nucleus. . Ziam Ghaznavi. CHE 384T Lithography. November 30. th. , 2017. 1. Outline/Agenda. Motivation. Ion – Solid Interactions. Overview of IBL Systems . Future Outlook. 2. Motivation. SEMATECH and the ITRS. Two regions. Nucleus . protons and neutrons. Electron . cloud. region where you might find an electron. Modern View. . . . . . . .. Dalton (1803). Thomson (1904). (positive and negative charges). Chemistry. Basics of the Atom . Subatomic. Particle. Charge. Location in. the Atom. Mass. a.m.u.. : unit used to measure mass of atoms. “atomic mass unit”. proton. neutron. electron. 1 . 0. 1–. Atoms are neutral. Protons = Electrons. There are special kinds of atoms..... Ions. Isotopes. Ions. An Ion is an atom that has gained or lost ELECTRONS, so it has an overall charge. If an atom gains electrons, it’s overall charge becomes negative. If an atom loses electrons, it’s overall charge becomes positive. . Å. . . How many silver . atoms could be arranged side by side across the diameter of a dime?. Solution. The unknown is the number of silver (Ag) atoms. Using the relationship 1 Ag atom = 2.88 . Å. as a conversion . Our view of the atom has changed over time. 2. Aristotle . (460 B.C. – 370 B.C.). emphasized that nature consisted of four elements: air, earth, fire, and water. did not believe in discontinuous or separate atoms, but felt that matter was continuous. The Complete Modern Atom. An atom is:. mostly empty space. . nucleus has . most of . mass. of an atom . Atom is divisible. Protons (+1 charge). Neutrons (no charge). Electrons (-1 charge). nucleus contains protons & neutrons.