Which of the following gases are diatomic except? by Sunday | Aug 23 | Chemistry WAEC | 0 comments A. nitrogen B. helium C. hydrogen D. fluorine E. oxygen Correct Answer: Option B – helium Users Also Read These:Which of the following elements is diatomic?Which of the following gases contains the least…Which of the following gases is not acidic?Which of the following pairs of gases are pollutants…In a mixture of gases which do not react chemically…