ERSC 2220H Lecture Notes - Lecture 4: Platinum Group, Rare Earth Element, Alkali Metal

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Ersc 2220 lecture section 4 the periodic table and chemical nomenclature. Describe the origins of the periodic table. Identify specific elements as a metal, non-metal, or metalloid, and give its period, group number, group name, and physical state. Write and name ionic compounds involving a metal and a non-metal using iupac conventions. Write and name compounds containing polyatomic ions using iupac conventions. Name binary molecular compounds using proper greek prefixes. The elements are grouped in several categories, according to properties and therefore according to position in the periodic table. Two major groupings are metals and non-metals. Tend to form cations in ionic compounds. Tend to form anions in ionic compounds. Active metals: very reactive to air and water, lithium, potassium, sodium. Noble metals: very unreactive, gold, silver, copper. Have properties intermediate between metals and non-metals. Most important current use is as semiconductors. Metals are found to the left of the periodic table.

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