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An Aluminum atom has a mass number of 27 and an atomic number of 13. How many protons, neutrons, and electrons does it contain, respectively?
Chemistry
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Step 1: Analyze Question 10.
A neutral atom of Aluminum has a mass number (A) of 27 and an atomic number (Z) of 13.
- The atomic number (Z) represents the number of protons. So, protons = 13.
- In a neutral atom, the number of electrons is equal to the number of protons. So, electrons = 13.
- The mass number (A) is the sum of protons and neutrons. So, neutrons = A - Z = 27 - 13 = 14.
- The question asks for the number of protons, neutrons, and electrons respectively.
- Therefore, the numbers are 13, 14,
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