Is hydrogen lighter than air?
Approved answer
Hydrogen's Properties
Hydrogen is recognized as the lightest and smallest element in the universe, as well as being the most abundant. It has a density that is 14 times less than that of air, allowing it to ascend rapidly at a rate of nearly 20 meters per second—significantly quicker than natural gas, which rises about six times slower. This rapid ascent means that when hydrogen is released, it disperses quickly into the atmosphere.