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Every atom of the same element will have the same number of protons. The number of protons is the same as the atomic number, which is 6 protons. In a neutral atom, the number of electrons is the same as the number of protons, so 6 electrons. Carbon-13 tells the mass number (the sum of the protons and neutrons). So we subtract the number of protons from the mass number to get the neutrons, 13 - 6 = 7 neutrons.

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Lincoln Wolf

Lvl 13
3y ago

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