Yes. I would go with helium if you can get it. Hydrogen can explode.
No, helium balloons are not radioactive. Helium is a non-toxic, inert gas often used to fill balloons because it is lightweight and does not react with other chemicals. It is safe for decorations and festivities.
HELIUM
If you want the balloons to float, you would probably use helium.
Helium is typically used to fill airships and balloons due to its low density, which allows them to float in the air.
Helium gas is commonly used to fill party balloons because it is lighter than air, making the balloons float.
if its possible then the reason could be the expansion of high pressured helium from tank to balloon is large.
Helium at room temperature is commonly used to inflate balloons due to its low density, making balloons float.
Helium is commonly used to fill balloons. It is non-flammable and lighter than air, allowing balloons to float.
Helium is a colorless, odorless, and tasteless inert gas that is used in various applications such as in balloons for parties and in cryogenics for cooling superconducting magnets.
Helium
25 Balloons (Approx.)(I might be wrong as I am not sure)
The volume of a helium tank refers to the physical space it occupies and is not directly related to the number of balloons it can fill. When the helium is released from the tank and fills the balloons, it expands to occupy a much larger volume due to the low density of helium gas compared to its liquid form in the tank. This expansion allows the helium from a tank with a small volume to fill a larger number of balloons.