A molecule is the smallest part of an compound. Hence, option B is correct.
The smallest part of an substance that has all the physical and chemical properties of that substance.
Molecules have 3 types:
Diatomic molecules, heteronuclear diatomic molecule, Oxygen molecule.
Example of molecule: H₂O (water)
These water molecule is made up of two hydrogen and one molecule of oxygen.
A substance is from a combination of two or more different chemical elements.
Example of compound: H₂ (hydrogen)
These hydrogen compound is made up of two molecules of hydrogen.
A molecule is the smallest part of an compound. Hence, option B is correct.
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