Question

:-What is the difference between 2H and H2 and 202 and 20?​

Answer 1

Answer:

2H- Represents two atoms of hydrogen

H2- Represents one molecule of hydrogen.

202 - Represents two molecules of oxygen.

20 - Represents two atoms of oxygen.

Answer 2

Answer:

here 2H means 2 atoms of hydrogen but the are free, but H2 means they combine together

now by this you can know easily that what happens in 2nd case

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