Differences between H2 and 2H.

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Solution

H2 is Molecular hydrogen. It is a molecule of hydrogen that consists of two hydrogen atoms bonded together by one single bond (also known as a sigma bond). A subscript also denotes how many of a particular atom is in a molecule, thus H₂ has two hydrogens.

2H, on the other hand, denotes two moles of elemental hydrogen or 2 atoms of hydrogen. It should be noted that elemental hydrogen is not bonded to anything.

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