Question

Is hydrogen H or H2?

Answer 1

Answer:

only

hydrogen. h

hellium. hi

lithium. li

brillium. br

ok

mark as brillient

Answer 2

Explanation:

See the symbol for hydrogen is H.

But it is always written H2 because it doesn't exist in free state of H as its valency is 1. So it forms a covalent bond with its own atom and forms the H2 molecule.