Question

What does the “2” in H2 represent?

Answer 1

the number of that type molecule there is..

like H²O is

Hx2

Ox1

Two hydrogen one Oxygen,

or in other words, water!!

Step-by-step explanation:

Answer 2

Chemical Formulas If we want to represent two atoms of hydrogen, instead of writing H H, we write H2. The subscript "2" means that two atoms of the element hydrogen have joined together to form a molecule.