Atomic number 10, this odorless gaseous element is obtained from fractional distillation of liquid air
.... for related gases and by fractional distillation of liquid air discovered krypton,
... [DOC] [TLE] natural resources from the air by renee zhang on Prezi [PAR] A colorless, odorless, inert gaseous element constituting approximately one 
percent of ... the extent of 18 parts per million and obtained by fractional 
distillation of liquid air.