Notes From 8/31

Página 1

Notes From 8/31 About The Periodic Table

- Elements are organized by their properties.

* Rows are called pyramids

* Elements in the same period have the same number of energy levels

* Columns are called groups or families

* Elements in the same group have similar properties related to their structure and tend to from similar bonds

Energy levels can hold a maximum number of electrons

1st can hold 1 or 2

2nd can hold up to 8

3rd can hold up to 18

4th can hold up to 32

* Electrons in energy levels closest to the nucleus have the lowest amount of energy

* Electrons farthest from the nucleus have the highest amount of energy and are easiest to remove

- Element Families

* Noble Gases (Group 18)

* Halogens (Group 17)

* Alkali Metals (Group 1)