PPT-Periodic Properties a)Electron Affinity

bElectro Negativity Anitha George Varghese Dept of Chemistry Marthoma College ELECTRON AFFINITY ELECTRON GAIN ENTHALPY Electron gain enthalpy is defined as the enthalpy change taking place when an isolated . VB theory MO theory applications Comparision of VB and MO theories VSEPR theory Bond order Bond energy Bond length Bond polarit y Partial ionic character of bonds The concept of multicentre bond Electron deficient compounds Hydrogen bond I 1. . What . are the trends for ionization energy? Why do these trends exist?. 2. . As you go across a period, do elements get better or worse at attracting electrons? . Justify. . your response.. 3. Arranged the elements by increasing atomic mass, and noticed properties repeat regularly. Left a space if an element didn’t belong in a particular column. THE PERIODIC TABLE. 1H-1 (of 10). Mendeleev stated the . 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.. The most awesome chemistry tool ever!. Unit Objectives:. Understand the history of who built up the periodic table, how they did it, and what law was made. Become familiar with structure of periodic table, how the e. Laws of periodic table. Modern periodic law . Periodic law. The physical and chemical properties of elements are periodic . function of their atomic numbers.. The physical and chemical properties of elements are periodic . 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:. 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 . Law. Geneva High School. Section 5-1 History of the Periodic Table.  By 1860, more than 60 elements had been discovered, yet chemists had no way of organizing them or agreeing on basic properties of the element.. 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. Should create electron structures for given atoms.. Could work out . Ar. of given elements.. ------------------------------------------------. Starter: What is abundance?. Fill in the table. Subatomic. Modern periodic law . Periodic law. The physical and chemical properties of elements are periodic . function of their atomic numbers.. The physical and chemical properties of elements are periodic . function of their atomic weights. 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.