CHEMGEN Lecture 3: Metal vs Nonmetal
11 Feb 2023
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Document Summary
There is a zig-zag or staircase line that divides the table. Metals are on the left of the line, in blue. Nonmetals are on the right of the line, in orange. Can be gas, solid, or liquid at room temperature. Corrosion of metal: a metal in contact with a solution with corrode if there are chemical species in the solution which can be rediuced at a potential more positive than the reduction. Corrosion is the chemical attack on the metal by its environment. Chemical attack is a chemical reaction in which a metal is oxidized. Example: so2 and co2 dissolve in water form acid solution (h2so3) and increase rate of corrosion. Metals high in the electrochemical series, have large positive oxidation potentials corrode easily. Example: group 3b elements, lanthanides, alkali and alkaline earth. Type of film or coating formed on the surface of metal.
