Which is atomic number
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The atomic number is the number of protons in the nucleus of an atom. ... The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that determines most of the chemical behavior of an element.
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The atomic number is the number of protons in the nucleus of an atom. ... The number of protons determines how many electrons surround the nucleus, and it is the arrangement of these electrons that determines most of the chemical behavior of an element.
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