Question

2H₂ means two _____ of hydrogen element​

Answer 1

Answer:

H2 means two hydrogen atoms. O2 means two oxygen atoms. The number before the element is the number of molecules. 2H2 means two molecules of hydrogen and four hydrogen atoms.

Explanation:

A compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds. Molecular hydrogen (H2), molecular oxygen (O2) and molecular nitrogen (N2) are not compounds because each is composed of a single element.

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