= Periodic Table =

Way we organize the elements

== Entries ==

* Element Symbol
 - one or two letters
* Atomic number
 - number of protons
* Atomic mass
 - Average of all occuring sums of nutrons + protons

== Organization ==
* Columns in table called groups/families
 - 18 total
* Rows called periods
 - 7 total

=== Groups ===

* Alkali metals
 - Group 1
 - +1 charge
 - Lithium
 - Sodium
 - Potasium
 - etc.
* Alkali earth metals
 - Group 2
 - +2 charge
 - Berillium
 - magneisum
 - calcium
* Boron family
 - Group 13
 - +3 charge
 - Boron
 - Aluminum
 - Galium
* Carbon family
 - Group 14
 - Carbon
 - Silicon
* Nitrogen family
 - Group 15
 - Charge -3
 - Nitrogen
 - Phospherous
 - Arsenic
* Chalcogens
 - Group 16
 - -2 charge
 - Oxgyen
 - Sulfer
* Halogens
 - Group 17
 - -1 charge
 - Florine
 - Chlorine
* Noble Gases
 - Group 18
 - Helium
* Transition Elements
 - Center groups 3-12
* Inner transition
 - Lower section of elements


[[index]]