Changes

== Element ==

{{Element | name=Argon | symbol=Ar | anumber=18 | amass=39.9 amu | noe=18 | class=Non-metal | cstructure=Cubic | color=Colorless gas | date=1894 | discname=[[Sir William Ramsey]] | origname=From the Greek ''argon''. | uses=Lighting | obtained=Air }}

 

 

'''Symbol:''' Ar

'''Atomic Number:''' 18

 

'''Atomic Mass:''' 39.9 amu

 

'''Number of electrons:''' 18

 

'''Classification:''' Non-metal

 

'''Crystal structure:'''  Cubic

 

'''Color:''' Colorless gas

'''Date of Discovery:''' 1894

 

'''Name of Discoverer:''' [[Sir William Ramsey]]

 

'''Name Origin:''' From the Greek ''argon''.

 

'''Uses:''' Lighting

 

'''Obtained from:''' Air