Which of the following pairs can be used to illustrate the law of multiple proportions? O H₂O and HCI ON₂O and NO O ZnO and ZnCl₂ OC₂Hg and CO₂

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.