jb What is an Atomic Number?
The atomic number of an element is equal to the number of protons in the nucleus of an atom of the element. Protons are positively charged particles found in the center of every atom. Each element has its own unique number and is differentiated from one another by the number of protons it has. The nucleus of an atom may also be home to neutrons, but the number of neutrons has no bearing on the element’s atomic number. Electrons reside just outside of the nucleus and also have no bearing on the number.
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