Paschen series
Brackett series
Humphreys series
Pfund series
midinfrared
infrared
hydrogen spectral series
hydrogen line
extreme ultraviolet
halogen
octadecyl
octyl
hydrogenosomal
heptabasic
pentadecyl
hexahydride
mediumwave infrared
hexabasic
hexahydro
hydrohalic
cosmic infrared background
octabasic
Lyman series
hydrotelluric
decyl
infrared spectrum
infrared ray
infrared frequency
Lyman-alpha forest
hydrogen spectrum
oxadiazolone
pentabasic
hydrogenously
iodoxole
benzene formula
hydroiodic
light spectrum
hydrodimerization
Kekule formula
ultraviolet light
benzene ring
longwards
benzene nucleus
octaethyl
hydrogen halide
hydride
hexahydroxy
butyl
pentafluorophenyl
fine structure