Chemistry · Structure 3: Classification of matter

S3.1 — The periodic table: Classification of elements

Chemistry · SL / HL · syllabus-mapped notes

1. The periodic table and electron configuration

   Periods, groups and blocks, and deducing electron configuration from an element’s position.

2. Periodic trends

   Explaining the periodicity of atomic and ionic radius, ionization energy, electron affinity and electronegativity.

3. Group trends, oxides and oxidation states

   Group 1 and 17 reactions, the acid–base character of oxides, and assigning oxidation states.

4. Transition elements

   The characteristic properties of transition elements, their ion configurations, and coloured complexes.