CHEM 141 Study Guide - Midterm Guide: Van Der Waals Radius, Effective Nuclear Charge, Dmitri Mendeleev

• School: Emory University
• Department: Chemistry
• Course: CHEM 141
• Professor: Nicholas Llewellyn

Document Summary

Periodic property: generally predictable based on an element"s position within the periodic table (ex: density, atomic radius, ie, ea) Johann d bereiner: had the first attempt to organize these elements according to similarities in their properties, which grouped elements into triads. Triad: consisted of three elements with similar properties. John newlands: organized elements into octaves, in analogy to musical notes. When arranged this way, the properties of every eighth element were similar, much as every eighth note in the musical scale is similar. Periodic law: when the elements are arranged in order of increasing mass, certain sets of properties recur periodically. Main-group elements: these elements" properties tend to be largely predictable based on their position in the periodic table. Transition elements (or transition metals): these elements" properties tend to be less predictable based simply on their position in the periodic table.