Answer:
hydrogen
Explanation:
The combination between chlorine and hydrogen forms an explosive reaction. In fact, chlorine and hydrogen combine according to the following equation:
[tex]Cl_{2}_{(g)} + H_{2}_{(g)} = 2HCl_{(g)}[/tex]
The reaction, when it takes place in a solution, that is, with water, results in fuming hydrochloric acid.
