L07 Chem 151 Lecture Notes - Lecture 7: Electronegativity, Ion, Ionic Bonding
18 Oct 2015
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Atomic radius increases up to down and decreases left to right. Electronegativity increases left to right and decreases up to down. Metals are conductive, nonmetals are not, semimetals are kinda. Graphite is conductive, 99. 9% silicon is conductive (99. 99% is not). Diluted ionic -> less conductive because less mobile charges. Major species in solution: acetic acid is a weak electrolyte, so the major species is ch3cooh with a small amount of ch3coo- and h+ How to predict if ion exchange reaction will occur. How to write balanced net ionic equations for ion exchange reactions or from a given molecular equation. Strong acids: hcl, hbr, hi, hclo3, hclo4, h2so4, hno3. A salt solution can be acidic, basic, or neutral. The solution of a salt made from the reaction of a strong acid and a weak base is acidic. When an atom is at its lowest on, it is a potential reducing agent.
