Heavier but safer. Look what happened to the Hindenburg:(
hydrogen
Helium is lighter than air
Helium exists as a monatomic gas, with atomic mass of 4.0. Thus any gas with a molecular mass higher than 4.0 would be heavier than helium. Hydrogen is the only gas that is lighter than helium; all others are heavier than helium.
Helium is heavier than hydrogen. Hydrogen is the lightest and simplest element in the periodic table, while helium is the second lightest element.
Helium is lighter than hydrogen. Helium has an atomic number of 2, which means it has two protons and two neutrons in its nucleus, making it lighter than hydrogen, which has only one proton in its nucleus.
Hydrogen is about 7 lighter than helium.
Saturn is much lighter than water. It is a gas giant made primarily of hydrogen and helium, with a density lower than that of water.
Helium is a gas, so it is not lighter than gas. It is like asking why is water heavier than liquid. Helium is less dense than all other gases except hydrogen, because it has an atomic weight of 4.
All of them. There are no elements lighter than hydrogen. It has only two atomic particles, and you cannot have an element with less.
No. Helium is lighter than air
hydrogen
Yes, helium is lighter than air. Helium is a lighter-than-air gas that has a lower density compared to the gases that make up our atmosphere, such as nitrogen and oxygen. This is why helium-filled balloons float in the air.