No it is a mixture of compounds.
an element that was used was chlorinethere are some others such as tear and mustard gas
hydrogen If the person posting the question is looking for a gas that is an element perhaps the answer they are looking for is Chlorine [Not that Hydrogen is not an element but I do not recall it having colour]
The common poison gas of WWI was Mustard Gas, a combination of Sulfur and Chlorine (C4H8Cl2S).
mustard gas kills you
signs and symptoms of mustard gas
No, its called 'mustard' gas because it has a yellow colour.
Mustard Gas was a blister agent.
mustard gas
It was called 'Mustard Gas'.
Yes It's called mustard gas antidote. Google it if you wish.
Any link between mustard gas and table salt.
None in the Holocaust or in the Second World War. There were victims (on both the front and at home) in the Great War.