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Yes.

It contains two atoms of the element aluminum (Al(2)), and three atoms of the element oxygen (O(3)), to form the compound aluminum oxide.

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Can a molecule contain as few as two atoms or more than a million atoms?

Yes - both. A molecule may contain as few as two atoms - e.g. CO carbon monoxide or greater than a million atoms e.g. Ultra High Mass Polyethylene.


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No, they contain different number of electrons. Isotopes differ in their number of neutrons.


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Without making a calcualation is 1.11 mol Pt more or less than 6.022x1023 atoms?

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