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2.4 Ions and ionic bonds

Syllabus
0620–2026–2027
Topic
2.4
Level
—

2.4.1—Formation of positive ions, known as

  • Describe formation of positive ions, known as cations, and negative ions, known as anions

2.4.2—An ionic bond is a strong

  • State: an ionic bond is a strong electrostatic attraction between oppositely charged ions

2.4.3—Formation of ionic bonds between

  • Describe formation of ionic bonds between elements from Group I and Group VII, including the use of dot-and-cross diagrams

2.4.4—Properties 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 solid

2.4.5—Giant lattice structure of ionic

  • Describe giant lattice structure of ionic compounds as a regular arrangement of alternating positive and negative ions

2.4.6—Formation 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 diagrams

2.4.7—Ionic compound properties from

  • Explain ionic compound properties from structure/bonding: high melting/boiling points and electrical conductivity when molten or aqueous, but not solid

Objective notes

7 learning objectives
ConceptIGCSE Chemistry