What you’ll learn7 learning objectivesChoose one objective for a focused lesson, or study the complete topic.2.4.1Formation of positive ions, known as• Describe formation of positive ions, known as cations, and negative ions, known as anionsSyllabus objective2.4.2An ionic bond is a strong• State: an ionic bond is a strong electrostatic attraction between oppositely charged ionsSyllabus objective2.4.3Formation of ionic bonds between• Describe formation of ionic bonds between elements from Group I and Group VII, including the use of dot-and-cross diagramsSyllabus objective2.4.4Properties of ionic compounds: (a)• Describe properties of ionic compounds: (a) high melting points and boiling points (b) good electrical conductivity when aqueous or molten and poor when solidSyllabus objective2.4.5Giant lattice structure of ionic• Describe giant lattice structure of ionic compounds as a regular arrangement of alternating positive and negative ionsSyllabus objective2.4.6Formation of ionic bonds between ions• Describe formation of ionic bonds between ions of metallic and non-metallic elements, including the use of dot-and-cross diagramsSyllabus objective2.4.7Ionic compound properties from• Explain ionic compound properties from structure/bonding: high melting/boiling points and electrical conductivity when molten or aqueous, but not solidSyllabus objective