Because it's a lighter-than-air gas. Hydrogen could also be used, but hydrogen is extremely flammable, as the makers of the Hindenburg found out, whereas Helium does not react with oxygen and therefore will not burn.
Yes, helium weather balloons are commonly used.
How Helium is used: It is used to blow up balloons.
mostly helium is used in balloons
Helium at room temperature is commonly used to inflate balloons due to its low density, making balloons float.
The nonflamable element used in balloons is Helium, (He).
If you want the balloons to float, you would probably use helium.
helium
Helium is the most used gas for balloons; sometimes hot air and rarely hydrogen.
Helium is used in blimps and balloons. It is the second lightest element to hydrogen, which is not used because it is highly flammable.
Helium is a gas used to inflate lighter than air balloons.
because helium gas is lighter
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.