If mass number is 23 and atomic number is 11, how many neutrons does the atom have?

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Multiple Choice

If mass number is 23 and atomic number is 11, how many neutrons does the atom have?

Explanation:
Mass number is the total of protons and neutrons, and the atomic number tells how many protons an atom has. With a mass number of 23 and 11 protons, the neutrons are 23 minus 11, which equals 12. So the atom has 12 neutrons.

Mass number is the total of protons and neutrons, and the atomic number tells how many protons an atom has. With a mass number of 23 and 11 protons, the neutrons are 23 minus 11, which equals 12. So the atom has 12 neutrons.

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