PPT-8.4-8.6 Electron Configuration, The Explanatory Power of the Quantum Mechanical Model,

Electron Configurations Valence Electrons and the Periodic Table The periodic table is arranged by grouping elements with similar chemical properties connection between electron configuration and chemical properties. Jeffrey. Thorin. Daniel. JJ Thompson. Discovered the electron. Wrote books on atomic theory and structure. First to suggest that atoms have parts. Robert Millikan. Found the accurate way to decide the charge carried with an atom. Electron Configuration. Quantum Mechanical Model. Quantum mechanics was developed by Erwin Schrodinger. Estimates the probability of finding an e. - . in a certain position. Electrons are found in an “electron cloud” or orbital. Chemistry. Fifth . Edition. Nivaldo. J. . Tro. Chapter . 9. Electrons in. Atoms and . the Periodic . Table. Dr. Sylvia Esjornson. Southwestern Oklahoma . State University . Weatherford, OK. On May 6, 1937, while landing in New Jersey on its first transatlantic crossing, the . Finish Calculations. Start Quantum Numbers. Drill. Calculate the frequency and wavelength of a wave with E = 3.0 . x. 10. -15. J.. nu = 4.5 . x. 10. 18. Hz. lambda = 6.7 . x. 10. -11. . m. = 0.067 nm. Advanced Chemistry. Ms. Grobsky. Shortcomings of the Bohr Model. Bohr’s model was too simple. Worked . well with only hydrogen because H only has one . electron. C. ould . only approximate spectra of other elements with more than one . Quantum Atomic Theory. Heisenberg (1901-1976). Schrödinger (1887-1961). Einstein (1879-1955). Pauli (1900-1958). Plank (1858-1947). Bohr-Rutherford . vs. Quantum. Similarities. Electrons have discrete amounts of energy. Chapter 5. The scale model shown is a physical model. However, not all models are physical. In fact, several theoretical models of the atom have been developed over the last few hundred years. You will learn about the currently accepted model of how electrons behave in atoms.. DO NOW. Pick . up your paperwork. Pick up two handouts. Get out Electron Configuration Notes, your Blank Periodic Table, and your green periodic table.. RULES. Aufbau. Principle. Each electron occupies the lowest energy orbital available. Electrons are added from the ground state up. Electrons fill in increasing energy order.. 2. Electron Configuration. An . “electron configuration”. of an atom is a particular distribution of electrons among available subshells. . The . notation for a configuration lists the . subshell . Lesson Objectives. Understand the relationship between the number of orbitals in various energy sublevels and the length of the periods in the periodic table.. Identify each block of the periodic table and be able to determine which block each element belongs to based on its electron configuration.. 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). the development of quantum theory early in the twentieth century and remains at the frontier of physics today There are several inconsistent Modern quantum theory reinforces Bohrs conclusion that what Three rules:. electrons fill orbitals starting with lowest n and moving upwards;. The order is: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d etc.. Orbital Diagram. The . electron configuration. of an atom is a shorthand method of writing the location of electrons by sublevel.. History. Organization. Introduction to . Bonding. Trends. Terms. The Periodic Law. States that the physical & chemical properties of the elements are periodic functions of their atomic numbers.. The Periodic Table.