questionedithistorytranslationsCurrent version This is the accepted version. added by globalquiz.org Feb. 9, 2016, 1:42 p.m. Which letter is not used as a symbol of a chemical element? NOPRN is the chemical symbol of nitrogen, O - oxygen, P - phosphorus.globalquiz.orgShare and bring new players to the game!0Very uninterestingToo difficultPoorly writtenIncorrect or questionableCorrect this question0Very interesting!reach: rather globalchemical elementschemistryVotes Acceptable Sandesh Sumnath Acceptable Sancho Acceptable Vijay