Ions and ionic bonds
Ions and ionic bonds
Atoms are neutral because protons and electrons balance. An ion forms when an atom loses or gains electrons to get a full outer shell, which is usually more stable.
Step-by-step lessons on Edexcel IGCSE Chemistry Ionic bonding. Each one builds up to exam-style questions. Build a solid grasp of atomic structure, bonding and the mole concept early, since these underpin almost every other topic, then move on to the more calculation-heavy quantitative and organic chemistry content.