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The magnesium isotope represented by the nuclide symbol contains protons, neutrons, and electrons. Protons: Neutrons: Eloctrons: 12, 12,12 12, 12, 13 12. 13.12 13. 12,12 The mass number is What is the mass number? The mass number is Protons: 8 Neutrons: 10 Electrons: 10 The mass number is Protons: 16 Neutrons: 16 Electrons: 16 The number in the top left comer of the nuclide symbol is called the atomic number called the mass number equal to the charge 2 The quiz described a common notation used with atoms. The symbol to define an atom, in the format shown, is called Often, this symbol is written without the charge, such as: zA an orbital diagram an ion symbol a nuclide symbol an electron configuration What is the answer to this question? What is the total charge? The second important concept taught in the quiz was charge. An atom has a charge when the number of protons does not match the What is the total charge? number of protons number of neutrons nimber of electrons mass number atomic number