PPT-Periodic Trends

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 . Determine S and Z (6s6p)k and so on Write the electron configuration in Slater format and determine S and Z for each of the following. 5a. Determine Zeff for valence electrons in the series: Li, Be . 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. 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.. Higher Supported Study - Week 2 . Key Areas – Periodic Trends . The trends in . covalent radius . across periods and down groups.. The trends in . ionisation energies . across periods and down groups. . 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:. Elemental Properties and Patterns. The Periodic Law. Dimitri. Mendeleev (1869/1871) 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. . 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 . 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. Classification of Elements. 1829 German Chemist J.W. . Dobereiner. published a classification system to sort elements. Noted trends and patterns related to chemical properties. Classified the elements into TRIADS(sets of three elements of similar properties. 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. The atomic size of representative elements is affected by the attractive forces between the protons in the nucleus and the electrons in the outermost energy level.. Learning Goal . . Use . the electron configurations of elements to explain the trends in periodic properties. .