Groups + Periodic Table

Group = column (vertical)

Period = row (horizontal)

Group 1: Alkali metals

Group 2: Alkali EARTH metals

Groups 3-12: Transition Elements

Group 17: Halogens

Group 18: Noble Gases

Elements in the same group have SIMILAR [chemical] properties

LHS → RHS of a period, properties change from METALLIC to NONMETALLIC