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Question

What is the representation of atom of hydrogen and a molecule of hydrogen?
  1. H2 and H
  2. H2 and H2
  3. H and H2
  4. H and H

A
H and H2
B
H2 and H
C
H2 and H2
D
H and H
Solution
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The hydrogen atom is written as H and hydrogen molecule is formed by the combination of two hydrogen atoms and is written as; H2.

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