The term periodicity is used to describe trends in the Periodic table, either going down a group or along a period. Period 3 covers elements from the s-block (so called because they are filling the 3s orbital) and the p-block (filling the 3p orbital), metals, metalloids and non-metals. This collection of posts covers everything you need to know, the physical and chemical trends of both the elements and compounds of Period 3.
Explaining the trend in atomic radius across Period 3
The elements of Period 3
- looking at trends in melting point and their physical structure, ionisation energy and key chemical reactions
The oxides of Period 3
- physical and chemical properties of period 3 oxides including exam Q&A