11. Which of the following subatomic particles determine the identity of an atom? A. protons B. neutrons C. protons plus neutrons D. electrons plus protons 12. Which particles have approximately the same size and mass? A. protons and neutrons C. electrons and protons B. neutrons and electrons D. None because all are different in terms of size and mass 13. Which two particles would be attracted to each other? A. protons and neutrons C. electrons and protons B. electrons and neutrons D. Al particles are attracted to each other. 14. Which of the following statements are TRUE about the subatomic particles? I. The charge of electron is opposite to the charge of proton. II. Proton has approximately the same mass with neutron. III. Electrons and protons are located within the nucleus. IV. The mass of an atom is concentrated at the nucleus. A. I, II, and III B. I, II, and IV C. I, III, and IV D. I, II, III, and I​