An aluminum atom has an atomic number of 13 and a mass number of 27
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Answered by
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Answer:
14 neutrons
Explanation
The mass number is the total number of protons and neutrons in a nucleus. The atomic number is the number of protons in the nucleus.
With this information it is an easy question:
mass number (p + n) - atomic number (p) = neutrons (n)
→ 27 − 13 = 14 neutrons
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