Nothing. Helium is an element so it is as is. Or if you were looking for something else it would be what it is made of, which would be protons (p+) nuetrons (n0) and electrons (e-)
Helium
No, helium inside a balloon is not a compound. Helium is a chemical element and is the second lightest element on the periodic table. It exists as individual helium atoms inside the balloon.
helium
helium
Helium hasn't an effect.
Inside the Sun, it is mainly hydrogen-1 fusing into helium-4.
A helium balloon is made by filling a latex or mylar balloon with helium gas, which is lighter than air, causing the balloon to float. The helium gas is sealed inside the balloon, allowing it to stay afloat for a period of time before slowly deflating.
Helium balloons float down due to the weight of the balloon being greater than the lift force generated by the helium inside. As the helium inside the balloon slowly leaks out over time, the lift force decreases, causing the balloon to float down.
Not if its regulation.
helium (?)
Helium goes into a balloon to make it float.
Inside a balloon there is gas. This gas is normally helium if you want the balloon to fly high, but hydrogen also works.