The Atom is composed of 3 main particles protons neutrons and electrons.
Protons carry a positive charge and determine the type of elements for example the element with 8 protons in its nucleus is oxygen and it is Atomic number 8 on the periodic table Same with Carbon six protons so its atomic number six on the table.
Neutrons: serve a very big purpose they hold the nucleus together have you ever taken two magnets and stuck both ends together and then tried to do it b north to north pole and south to south pole they repel well so do protons neutrons have no charge so they stick together like glue and hold the protons close and these can be calculated by taking the atomic number and atomic mass and subtract mass from number
electrons: Orbit the outside of the atom and are equivalent to the number of protons they are small very small and move rapidly they carry same charges and want to be as far away from one another as possible and thus have orbits that are spaced so that happens
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