"Hydrogen is very corrosive and hard to work with" Corrosive compared to what? You can put it in a rubber balloon and hand it to a kid.
"T is radioactive hydrogen": True, it emits low energy beta radiation, which is an electron, and is stopped by a sheet of paper. I used to have a wrist watch with a tritium dial; I haven't died of cancer yet.
Corrosive is the wrong word, but hydrogen is such a small molecule, it can leak through metals and weaken them, as I understand it. It's hard to contain.
It’s a high-school level laboratory experiment. Nobody’s handing them out at birthday parties[0], but mostly because hydrogen likes to go bang loudly, not because it’s corrosive or toxic or anything.
I know about helium balloons, but hydrogen is really cheap compared to helium. And it's nowhere near as dangerous as it's made out to be. The Hindenburg burned, it did not explode.
