Question

what do H, H2and 2H stand for?

Answer 1

Heya Friend,

Here are the answers-

H- Hydrogen.
H2- Molecular Hydrogen.
2H- Deuterium (isotope of hydrogen).

Hope it helps...!!!

Answer 2

Hello....

H ----- hydrogen atom
H2 - - - - - - hydrogen gas ( hydrogen molecule)
2H ---------- deuterium (isotope of hydrogen)

hope it helps...