Hydrogen gas (H2)
Work Step by Step
Densities of H, O and Ar at STP are 0.9, 1.43 and 1.7 g/L respectively. Since we know that density is inversely proportional to volume, Hydrogen gas has greatest volume as it has lowest density.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.