CHEM 1500 Lecture Notes - Lecture 16: Arsenic, Scandium, Strontium
8 Apr 2021
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General os of metals and nonmetals in compounds. Nonmetals: os ranges from negative to positive (except for fluorine, f that can only have an os of -1 because it is the most electronegative element) Typical os for main group metals usually relate to the group number, gn. Group 1 metals: os = +gn = always +1. Group 2 metals: os = +gn = always +2. All have os from +2 to +4. No relation to the gn, just have to memorize that bi has os of +3. The oxidation states vary from +1 to +7. Chromium and manganese are divided into highest and lowest os. Chromium, cr may have os +2 +3 or os = +gn = +6. Manganese, mn shows multiple os from +2 to os = +gn = +7. Chromium, cr highest os = +gn = +6. Manganese, mg highest os = +gn = +7. In the os of +1 mercury forms the polyatomic cation of hg2cl2.
