Which of the following is correct?
A) 23Na, 11 protons, 11 neutrons, 12 electrons
B)40Ar, 18 protons, 22 neutrons, 18 electrons
C)238U, 238 protons, 238 neutrons, 238 electrons
D)55Fe, 26 protons, 29 neutrons, 29 electrons
Answer if you know
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