PPT-Periodic Trends: Atomic Radii

Elemental Properties and Patterns The Periodic Law Dimitri Mendeleev 18691871 was the first scientist to publish an organized periodic table of the known elements He was taking a chemistry course in Russia and tried to find a way to organize the periodic table . . 9/8/15. Elements come in different sizes. Which do you think is the biggest and why?. Objective . Tonight’s Homework. To determine which element is the biggest . none. Trends in the Periodic Table. Magdalena Kowalska. CERN, PH-Dept.. kowalska@cern.ch. . below. Outline . 2. Laser spectroscopy on radioactive nuclei. Optical isotope shifts. A long way from isotope shifts to charge radii. Take-home message . Trends and Similarities. Trends of the Periodic Table:. At the conclusion of our time together, you should be able to:. . Give a trend across and down the Periodic Table for metallic characteristics, reactivity, atomic radius and ion radius, . Electron Configuration and Periodic Properties. Electron Configuration and Periodic Properties. Objectives: . Define atomic radius and ionization energy.. Compare the periodic trends of atomic radii and ionization energy.. What is the difference between a Bohr models, Lewis Dot Diagram, and the Nuclear Symbol? . 1. Periodicity . Periodic Trends . 2. Periodic Law . The chemical and physical properties of the elements are periodic functions of their atomic numbers; properties of the elements occurred at repeated intervals called periods.. Ga. . Standards. Students know . how to use the periodic table to identify . trends . in ionization energy, . electronegativity. , and the relative sizes of ions and atoms.. Definition: Half . of the distance between . 4. Interpreting the Periodic Table. Typically . they have a shiny . luster.. Relatively . high . density.. Malleable . ( they can be hammered into thin sheets. ).. Ductile . (they can be drawn into a wire. Periodic Table. Periodicity:. regular variations (or patterns) of properties with increasing atomic weight. Both chemical and physical properties vary in a periodic (repeating pattern).. Group:. vertical column of elements (“family”). Periodic table. Elements are arranged based on similarities in their properties. Dmitri Mendeleev is credited with our current periodic table. Even predicted the existence of elements that were not yet discovered(i.e. Gallium). What patterns exist on the periodic table?. Lesson Essential Question:. The Basics. The Basics. Metals, Nonmetals, Metalloids. There is a zig-zag or staircase line that divides the table.. Metals are on the left of the line, in . Part 1: The Periodic Table . and Physical Properties. Mendeleev’s Periodic Table. Dmitri Mendeleev. Modern Russian Table. Chinese Periodic Table. Stowe Periodic Table. This is Timothy Stowe's physicists’ periodic table. This table depicts periodicity in terms of quantum numbers. . Section 1. Development of the Modern Periodic Table. The periodic table evolved over time as scientists discovered more useful ways to compare and organize the elements.. Section 1: . Development of the Modern Periodic Table. 1. What is an atom’s atomic radii?. 2. What happens to atomic radii across a period? Why?. 3. What happens to atomic radii as you move down a group? Why?. Practice problems, page 144. Ionization Energy. m. etal. nonmetal. metalloid. malleable. ductile. atomic . radius. electronegativity. ionization energy. shielding. “Wolfram”, . Viza. . Arlington, 2010. Trend. What is a trend?. a pattern or direction.