The density of hydrogen gas is lower than that of uranium hexafluoride (UF₆)gas if both are measured at STP.

Question

Quizplus · Accepted Answer

Hydrogen gas, being the lightest element, has a much lower density compared to uranium hexafluoride, which is a heavy compound consisting of uranium and fluorine atoms. At standard temperature and pressure (STP), the density of a gas is directly related to its molar mass, and hydrogen has the lowest molar mass of all elements.

The Density of Hydrogen Gas Is Lower Than That of Uranium