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media type="custom" key="7486583"Hello!

What is an atom? Atoms are the building blocks of matter. The word ‘atom’ was originally meant to indicate the smallest indivisible part of matter. However, research revealed that an atom was in fact not the indivisible unit of matter and that it consisted of other particles. They came to be known as the subatomic particles. [|What makes up an atom]? What are the different parts of an atom? Let us find out.
 * **Democritus proposed that there are atoms and void. (Greece)** || Democritis is a Greek scientist whoose discovery, in 400 BCE, lead him to theorise that everything is made up of void and atoms. Depending on the arrangement, the density varies with less void being denser. His discovery has helped the development of the modern atomic theory. He quoted, "by convention bitter, by convention sweet, but in reality atoms and void." ||

[] The central portion of an atom is known as the atomic nucleus. It consists of protons, which carry positive charge and neutrons, which carry no electric charge. The negatively charged electrons orbit the atomic nucleus. The protons and neutrons in an atomic nucleus contribute to the atomic mass. However, the electrons floating in the region around the nucleus are extremely lightweight subatomic particles.