CHEM 1151 Lecture 7: Notes 9/8 - Unit 2

• School: KSU
• Department: Chemistry
• Course: CHEM 1151
• Professor: Peter L Henricks

Document Summary

Ionic bonds: bonds formed between positive and negative ions. Usually solids: covalent bonds: bonds formed by atoms sharing electrons. Can be gases, liquids, or solids: valence electrons: the electrons in the outermost energy level. Ions: cations: positive ions, atoms that lose electrons, usually metals, anions: negative ions, atoms that gain electrons, usually nonmetals, octet rule: ions will gain or lose electrons in order to get 8 valence electrons. Writing formulas of ionic compounds: write positive ion followed by negative ion, cross charges to give subscripts.