CHEM 1A03 Lecture Notes - Lecture 2: Fluoride, Electron Configuration, Bromine

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Jeff Landry

Document Summary

As you increase the distance between two charged particles, the force between them decreases. Other elements try to attain these configurations. Considered chemically inert until 1962: many noble gas compounds known, including eg. krf2, xef2, x3f4, xef6, xef6, xef2, Non metals: main group (s and p block) non-metals tend to gain electrons easiest way to gain noble gas configuration, right side of periodic table group 15 18. Descriptive halogen chemistry: 1) ability to oxidize increase up the group (towards f) eg. yes: cl2(g) + 2i-(aq) i2(aq) + 2cl-(aq) No: br2(l) + cl-(aq) no rxn: 2) they react with metals to form salts eg. nacl. 2na(s) + cl2(g) 2nacl(s: 3) halogen mp/bp increases down group 17a. Metals: main group (s and p block) metals (and h) tend to lose electrons to get to noble gas configurations. K in contact with water or air it burns / flames up. Things in centre have the highest melting points ( peaks in the centre)