Atomic & Ionic Radius, Electronegativity Trends

Originally made for the BTEC National Applied Science Level 3 course, this is the first lesson of Unit 1 Learning Aim A2.

The lesson introduces the concept of atomic radius trends in a simple format, getting the students to make predictions for trends based on prior knowledge and addressing misconceptions. Trends across periods and down group addressed.

Then it moves onto how the radii of cations and anions change across periods and down groups.

Finally trends in electronegativity is discussed and then students have to use data to describe and explain trends across periods and down groups.

Final plenary are some past exam questions from A-level Chemistry.