Which of the following models correctly illustrates the makeup of a helium atom? Choose the answer with the correct model and explanation.
A.
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The atomic number determines that there are two protons and electrons. The atomic mass determines that there are four neutrons in the nucleus.
B.
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The atomic number determines that there are two protons and electrons. The atomic mass minus the atomic number determines that there are two neutrons.
C.
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The atomic number determines that there are two protons and neutrons. The atomic mass determines that there are four electrons in the electron shell.
D.
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The atomic number determines that there are two protons and electrons. The atomic mass minus the atomic number determines the number of neutrons.