Compounds formation occur by the combination of one or different types of atoms
In the chemical reactions, atoms are rearranged.
The atom of the same elements are similar in size and properties and the Atoms of the different elements are different in size and properties.
Explanation:
John Dalton has developed the Dalton atomic theory.
Dalton atomic theory was the first to explain that all matters composed of atoms and its properties, the atom as the smallest particle which cannot be destroyed and damaged.
This theory was based on the law of conservation of mass and law of constant composition.
