what is atomic number and represent atomic number
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atomic number is a chemical property of an element, it can be defined as the number of electrons or protons present in an atom
e.g, atomic no. of Na is 11
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Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.
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