To increase your understanding of the periodic table, we suggest that you memorize the following rules of thumb. You will be able to refer to them through this chemistry course and use them in your other science courses. All elements in a horizontal row are a period. All elements in a vertical column are a group.
Metallic properties increases from the top down the periodic table.
If they are a solid, the surfaces are dull. Non metals make great insulators for electricity conduits. Non-metal properties increase from left to right across the periodic table. Non-metal properties increases from the bottom up the periodic table. Metalloids have the property of both metals and non metals.