The periodic table: groups and periods

The periodic table is organised in groups and periods.

Groups of the periodic table are shown from top to bottom and periods are shown from left to right

The groups run along the top of the table, while the periods run down the side. Metal groups are found on the left of the table, groups of non-metals are on the right.

Metal groups are found on the left of the periodic table and non metals on the right — To remember that groups run along the top of the table, imagine a table with musical groups on top of it. Heavy metal groups are on the left and string groups (non-metals) are on the right.

Different periods of time are illustrated on the table leg, indicating that the periods are found down the side of the periodic table.