Which of the following statements is true about the number of protons in an atom of Cl and an atom of Mg?

• A. An atom of Cl has the same number of protons as an atom of Mg.
• B. An atom of Cl has a lesser number of protons than an atom of Mg.
• C. An atom of Cl has a greater number of protons than an atom of Mg.

Answer: (C)