Everybody in this universe is made of smallest particles which are called as Atoms. These contain other sub-atomic particles which exist as the combination of mass and energy. In an atom, There are three kinds of particles namely Electrons, Protons, and Neutrons. Protons and Neutrons are situated at the center in a combined state which is called a Nucleus. Electrons revolve around this Nucleus in different states due to some centrifugal and centripetal forces. These atoms generally are known as the building blocks of the universe. But its arrangement is different in solids, liquids, and gases which may sometimes change the shape of the whole universe due to these different due to these packing of atoms.
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