Are hydrogen and hydrogen sulfide the same thing?

Answer 1

No, they are not the same.

• Hydrogen sulfide (H2S, gaseous) is a kind of poison, smelling like rotten eggs,

  and

• Hydrogen (H2, the lightest gas we know) is a odourless, very explosive gas when in contact with air.

Answer 2

No, hydrogen and hydrogen sulfide are not the same thing. Hydrogen is a colorless, odorless gas and the simplest element on the Periodic Table, while hydrogen sulfide is a compound made of hydrogen and sulfur that has a distinctive odor of rotten eggs.