The mass of an element is 27 and its atomic number is 13. What is the composition of the nucleus of its atom?

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A. 13 electrons and 14 protons
B. 13 neutrons and 14 protons
C. 13 protons and 14 neutrons
D. 13 electrons and 14 neutrons

Correct Answer: Option C

C. 13 protons and 14 neutrons

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