Element	Electron Configuration/Emission Spectrum	Common Compound(s)/Application(s)
7 Nitrogen (N)		Proteins, Nucleic Acid/Essential for Life Silicon Nitride (Si3N4)/Cutting Tools Ammonia (NH3)/Fertilizers Ammonium Nitrate (NH4NO3)/Fertilizers, Explosives, Plastics Nitric Acid (HNO3)/Explosives Nitric Acid + Glycerol (Nitroglycerine)/Explosive Nitroglycerine + Clay/Dynamite Sodium Azide (NaN3)/Automobile Airbags N13 (Half Life = 10 mins)/PET Scan Nitrite (NO2-) Compounds/Food preservative
15 Phosphorus (P)		Phosphate (PO43-) Compounds/Fertilizers, DNA Calcium Phosphate (Ca3(PO4)2/Skeleton White ~/Incendiary Bomb Red ~/Match
33 Arsenic (As)		Arsenious Oxide (As2O3)/Insectivide Gallium Arsenide (GeAs)/LED
51 Antimony (Sb)		~ + Lead/Hardened Bullets ~ Trisulfide (Sb2S3)/Safety Match, Pigment
83 Bismuth (Bi)		~ Germanate (Bi4Ge3O12)/Scintillation Detectors ~ Subnitrate Bi5O(OH)9(NO3)4 /Gastrointestinal Disorder Treatment ~ Metal Alloys/Casts and Molds ~ + Lead + Tin + Cadmium/Electric Fuses, Fire Alarms and Sprinkler Systems

Group 15 Elements