How was john dalton able to predict the formation of multiple compounds between the elements?

John Dalton was able to predict the formation of multiple compounds between the elements. As he measured the ratios , that led to the law of constant composition.

John Dalton give different postulates that are as follows:

1. All matter is made of atoms and these atoms are indivisible .

2. All atoms of an element are identical in mass and properties.

3. Compounds are generally defined as the combinations of two or more different types of atoms.

So As he measured the ratio that led to the law of constant composition.  Thus predict the formation of multiple compounds between the elements

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

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