Question

what is the meaning of H2is the meaning of H2 a​

Answer 1

The lightest known gas; hydrogen vapors are highly flammable, colorless, odorless, tasteless, and nontoxic. Hydrogen is used as a means of providing a reducing atmosphere, as a carrier gas for epitaxial processes, and as a reagent to produce high-purity water.

Answer 2

Explanation:

H2 represents a molecule of hydrogen in which two hydrogen atoms are BONDED to each other, whereas 2H represents 2 moles of hydrogen in an elemental form. The elemental form is not bonded to anything.