More About the Periodic Table

The Periodic Table is Arranged in Periods and Groups

Periods

• The rows are called periods
• the properties of elements change as you go along a period (somtimes quite dramatically)

Groups

• The columns of the periodic table are called groups
• Elements in the same group have similar chemical properties. This is because they have the same number of electrons in their outer shell
• The properties of elements (such as reactivity) often gradually change as you go down a group (i.e. as the atomic number increases).

The Elements can be Classified as Metals or Non-Metal

The period table can be split into two parts, the metals are on one side…