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what is the differences between 2H and H2 ?

Dear Student,

Christie has posted correct answer, so you can refer it.

@Christie, Good reply! keep posting.

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 2H means 2 molecules of Hydrogen and H2 means 2 atoms of Hydrogen.... 

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2H means 2 hydrogen atoms and H2  means 2 atoms of hydrogen

2H = 2 MOLE OF HYDROGEN AND 1 ATOM

H2 = 1 mole of HYDROGEN AND 2 ATOMS 

 

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2H- means two atoms of hydrogen

H2- means a molecule of hydrogen which consists of its two atoms

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