Much more dense. They are the two lightest gasses in the universe, and gasoline is a liquid, which is always denser than a gas.
Gasoline is similar to Helium because it both has gas
There is one thing that is relative to both helium and hydrogen. Both of these are a type of chemical.
Both hydrogen and helium are considered as non metals, yes.
The atomic number of helium is one more than that of hydrogen. In both the elements, the electrons are filled in the 1s orbitals. Hydrogen has one electron, helium has two.
Hydrogen and helium are both present in significant amounts in the universe. They are also both light gases that have low atomic masses.
No. both are odourless gases.
A "red giant" star can fuse both hydrogen (in the star's outer shells) and helium (in the core).
When hydrogen and helium are mixed, they will not react chemically because they are both inert gases. Instead, they will form a gaseous mixture with the properties of both gases, maintaining their individual characteristics.
Helium gas is less dense than air, so it will rise and float in both air and water.
they both have the same element. which is hydrogen and helium.
They both have neutrons, protons and electrons.
I am unsure what you mean by the formula for Hydrogen and Helium because both are an element, not a compound and you would generally not have a formula for an element. However, I can tell you that the difference between the formula for Hydrogen gas and Helium gas if; Hydrogen gas: H2 H-H Helium gas: He Hope this helps