A SIMPLE KEY FOR CR REGISTRATION NUMBER UNVEILED

'XX': A couple of letters. Sequence ranging from ‘A’, followed by ‘B’ etc. 'O' and 'I' aren't used in this article in order to avoid confusion with the digits 0 or 1The chief industrial source of bromine is ocean h2o, from which the ingredient is extracted by means of chemical displacement (oxidation) by chlorine from the presence of sulfur