Arrangement of elements

1 Describe the Periodic Table as an arrangement of elements in periods and groups and in order of increasing proton number/atomic number

2 Describe the change from metallic to non-metallic character across a period

3 Describe the relationship between group number and the charge of the ions formed from elements in that group

4 Explain similarities in the chemical properties of elements in the same group of the Periodic Table in terms of their electronic configuration

5 Explain how the position of an element in the Periodic Table can be used to predict its properties