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Physics

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One isotope of nitrogen has 7 protons and 8 neutrons. Which is the correct reference for this isotope? A. nitrogen-8 B. nitrogen-7 C. nitrogen-15 D. nitrogen-1

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When referring to an isotope, you refer to the mass of its protons and neutrons combined
7 + 8 = 15, so you would refer to it as C. Nitrogen-15

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