CHEM 1R03 Lecture Notes - Lecture 90: Noble Gas, Lewis Structure, Ionic Bonding

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1R03
• Professor: Doug Mc Callion

Document Summary

Compare # of e vs. outer shell vs. chem. behaviour. So only outer e are important for chemistry called valence electrons. Valence and oxidation number are often interchangeable but valence specifically means the electrons in the outer energy level of the atom and oxidation is what charge the atom gets when bonding. Remember atoms tend to get a noble gas electron configuration for their valence electrons (2,8,8,8 etc) when bonding octet rule. I don"t know, it just is you can tell because the noble gases don"t react. There are exceptions and other possibilities for the oxidation number of atoms. Atoms can combine with other atoms to form compounds. This combination results in a vast number of chemical compounds. (500,000 new ones per year). Ionic bond the attraction that results between oppositely charged ions as a result of an electron transfer between these ions. (metal plus non-metal) electron transfer.