Consider sodium oxide, na2o. choose the best explanation for the subscript, 2, from the list provided. there are two atoms of oxygen and one atom of sodium. there are two atoms of sodium and one atom of oxygen. there are two molecules of sodium and two atoms of oxygen. there are two molecules of sodium oxide.

There are two atoms of sodium and one atom of oxygen.

There are two atoms of sodium and one atom of oxygen.

Explanation:

Atom is the element in its most simple form, that we can find in the periodic table, such as H (Hydrogen), O (Oxygen) and Na (Sodium).

A molecule is a compound formed by atoms that have covalent bonds between them. Covalent bonds occur between non-metals, or non-metals with hydrogen, or between hydrogen.

The bond between metal and non-metal is ionic, and the compound is not a molecule, it's a crystalline solid.

So, in Na2O, there are 2 atoms of Na and one atom of O, and there is a crystalline solid.

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