Um, you got an answer from rpenner.I asked dy for a answer, put science on the spot again, so it resorts back to deflection to me away from the answer I asked for.
There was NO deflection - if you bother to check I've only recently logged back in (having been to the hospital for a cancer check up - is THAT "deflection" in your eyes?).
If you have a room filled with nothing but hydrogen then gravity will make that hydrogen denser at the bottom of the room than it does at the top.
Ergo: you are wrong.