Magnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom? O It has 12 protons, 12 electrons, and 12 neutrons.
O It has 12 protons, 12 electrons, and six neutrons,
O It has six protons, six electrons, and no neutrons.
It has six protons, six electrons, and six
neutrons.