The notation for an atom includes its atomic number (number of protons), mass number (sum of protons and neutrons), and the symbol of the element. For example, carbon-12 is represented as 12/6 C, where 6 is the atomic number, 12 is the mass number, and C is the symbol for carbon.
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Atoms are represented using a notation that includes the chemical symbol, atomic number, and atomic mass. The chemical symbol is a one or two-letter abbreviation, atomic number indicates the number of protons, and atomic mass denotes the sum of protons and neutrons. For example, carbon is represented as “C-6.02 x 10^23” with 6 protons and an atomic mass of approximately 12.