This key facts covers Common Ions You Must Know within Ionic Bonding for GCSE Chemistry. Revise Ionic Bonding in Bonding & Structure for GCSE Chemistry with 27 exam-style questions and 20 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 8 of 13 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 8 of 13
Practice
27 questions
Recall
20 flashcards
🔢 Common Ions You Must Know
POSITIVE IONS (Cations)
- Na⁺ — Sodium ion
- K⁺ — Potassium ion
- Mg²⁺ — Magnesium ion
- Ca²⁺ — Calcium ion
- Al³⁺ — Aluminium ion
NEGATIVE IONS (Anions)
- Cl⁻ — Chloride ion
- Br⁻ — Bromide ion
- O²⁻ — Oxide ion
- S²⁻ — Sulfide ion
- N³⁻ — Nitride ion
Quick Check: What type of bonding forms between magnesium and oxygen? What ions are produced?
Ionic bonding. Magnesium (a metal, Group 2) loses 2 electrons to form Mg²⁺. Oxygen (a non-metal, Group 6) gains 2 electrons to form O²⁻. The compound is MgO.