4.1 The Periods 4.2 The Groups 4.3 Metals, Nonmetals, Semimetals 4.4 Metallic Bonding 4.5 Octet Rule 4.6 Ions 4.7 Covalent Bonding 4.8 Atomic Size 4.9 Ionic Size 4.10 mp/bp Trends 4.11 Metallic Trend ** More periodic Trends**
Metal atoms tend to lose their valence electrons to form positive ions called cations.
Within a group of elements, ion sizes increase with atomic number.