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 gases is monoatomic?Which of the following elements is diatomic?A form of carbon used for absorbing poisonous gases…The following are greenhouse gases except?The following gases decolourize bromine water except?