Question

The molecular formula of hydrogen is writes as '2H' and 'H2'which one is correct ?justify your answer.

Answer 1

H2 is the correct way to write molecular formula of hydrogen.

When you write 2H it means that 2 hydrogen ions are present, rather than a molecule of hydrogen. But when we say H2 we have two hydrogen atoms combined forming a molecule. That is why, you should write H2 and not 2H.

Hope this helps. :)

Answer 2

H2 is correct one because 2h means it contain 2 positive ions and h2 means it has 2 atoms which is formed when 2 hydrogen atom combined .