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Group 1
Alkali metals


Alkaline earth metals


Group 17
Halogens


Group 18
Noble gases


Green
Good


Yellow
Moderate


Orange
Unhealthy for sensitive groups


Red
Unhealthy


Purple
Very unhealthy


Maroon
Hazardous


A
Radio


B
Mircrowave


C
Infrared


D
Viisible


E
UV


F
X rays


G
Gamma


violet
380-450


Blue
450-495


green
495-570


Yellow
570-590


Orange
590-620


Red
620-750
