Why isn’t there much hydrogen found in the atmosphere?

1 Answer
Feb 7, 2016

The reason there is not much hydrogen in the atmosphere is because it is lighter than air, and so can easily escape the Earth's gravity.


Hydrogen,#H_2#, is one of the lightest gases that can be found on Earth. The other gas is helium, and these two gases are both lighter than air, because they have a high degree of buoyancy.

This means that the air below it is pushing up with a greater force than the air above it is forcing it down.