Atomic Structure - IGCSE Chemistry 0620 - All Paper 2 Solved - 2018–2024

IGCSE Chemistry 0620 Atomic Structure | All Paper 2 MCQ Solved 2018–2024 Complete walkthrough of all Atomic Structure MCQ questions from IGCSE Chemistry 0620 Paper 2 (2018–2024), covering May/June and Oct/Nov sessions. Every question solved with full explanation. Topics covered: Elements, compounds and mixtures: identifying and distinguishing Structure of the atom: protons, neutrons and electrons Atomic number, mass number and nucleon number Calculating number of protons, neutrons and electrons from notation Electronic configuration: shells and outer shell electrons Periods and groups: what they tell you about electron arrangement Ions: calculating electron numbers from charge Isotopes: definition, same protons, different neutrons Why isotopes have identical chemical properties: same outer shell electrons Calculating relative atomic mass from percentage abundance Identifying elements from electronic configuration ⏱ Chapters: 0:00 Elements, Compounds and Mixtures 2:47 Structure of the Atom 6:17 Atomic Number, Mass Number and Nucleon Number 9:50 Electronic Configuration and Periodic Table 15:04 Ions and Electron Numbers 19:23 Isotopes: Definition and Properties 43:10 Why Isotopes Have Same Chemical Properties 58:56 Calculating Relative Atomic Mass IGCSE Chemistry 0620 | CIE Cambridge Chemistry | Atomic structure IGCSE | Isotopes IGCSE | Electronic configuration IGCSE | Protons neutrons electrons | Relative atomic mass | Paper 2 MCQ solved | IGCSE revision 2025 | Cambridge past papers