The element sodium has an atomic number of 11 and a mass number of 23. How many protons, neutrons, and electrons does one atom contain?
A.
11 protons, 11 electrons, 12 neutrons
B.
11 protons, 12 electrons, 11 neutrons
C.
11 protons, 11 electrons, 23 neutrons
D.
23 protons, 23 electrons, 11 neutrons