nitrogen
atomic number 7
n
Freon
acetylene
airflow
anhydride
benzol
boron
cent.
creatinine
face-mask
fluorine
g-linolenic
halogens
helium
krypton
lox
monoxide
nitrometer
one-ninth
oxychloride
oxygens
phosphorus
silicium
tellurium
volta-electrometer
zero-emission