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Why are hydrogen and oxygen written as H2 and O2? 1. They are diatomic molecules. 2. All individual elements have the subscript 2. 3. To balance the equation.
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Why are hydrogen and oxygen written as H2 and O2?

1. They are diatomic molecules.


2. All individual elements have the subscript 2.


3. To balance the equation.

User Darotudeen
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1 Answer

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The answer is 1, the elements are diatomic and both contain 2 atoms in the same element
User Fantasmic
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