Advantages and disadvantages of helium

Answer 1

An advantage is that it's lighter than air and it isnt flammable and it can lift abjects of the ground

A disadvantage is that its rare and costs alot and also cant lift that heavy of things:)

Answer 2

Helium is not explosive. Hydrogen is a highly explosive gas, meaning an accident in an airship inflated with hydrogen would be disastrous. As was illustrated by the Hindenburg accident. Hydrogen actually poses advantages over helium in airships as it is lighter and a lot cheaper.

Answer 3

As helium gas is light , the baloons will go in the air.

Answer 4

If you breathe too much of it to the point where it displaces your regular air, it can be very bad for you and possibly kill you.