alt Hacker NewsTechnically yes, but practically no. Air is 78% nitrogen. Nitrogen is 3.3% lighter than air. Helium is 86.2% lighter than air. Hydrogen is 93% lighter than air.
Technically yes, but practically no. Air is 78% nitrogen. Nitrogen is 3.3% lighter than air. Helium is 86.2% lighter than air. Hydrogen is 93% lighter than air.
How much does that matter for party balloons, though? It's still buoyant.