4. Classify each of the following as either a molecule of an element
or molecule of the compound-
1. 2H2
2. Ca(OH)2
3.Al2O3
4. Mg
5. MgCl2
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Explanation:
1) hydrogen.
2)Carbon+hydroxide
3) Aluminium+Oxide
4) magnisium
5) magnesium+cloride
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