Formed bet metallic and nonmetallic ions 4. No more than 2 dots per side, one per side until each side gets one dot 2. See pg 231 for the representation of transferring of e- E. Types of ions 1. Polyatomic ions are groups of atoms that are covalently bonded but form an ionic bond with an ion of opposite charge a. To denote the ratio of ions in a comp, use an empirical formula a. simplest ratio of atoms or ions in a comp b. different comp can have the same emp formula 3.
Nomenclature is a term that refers to methods of naming chem.
NaCl contains many ions in a one to one ratio, H2O contains only 2 atoms of H and 1 atom of O 3. Octet rule must be obeyed for most nonmetals except H, which needs only two e- to fill its outer shell 3. Dashes are only used to show covalent bonds, dots can be used for either covalent bonds or lone pairs 6. Comp of boron do not follow the octet rule C. Prop of covalent bonds 1. Never use a roman numeral with a Group A metal.