9. What are neutrons ? A. Positively charged particles B. B. Particles of negligible mass C. Particles with zero electric charge D. Particles with charge numerically opposite in sign to that of electrons 10. What is the number of protons in a Uranium atom? (atomic number = 92) A. 82 C. 72 B. 92 D. Cannot be determined FOON 11. Which of the following particles is NOT found in the nucleus? A.Proton C. Electron B.Neutron D. Quarks 12. Which of the following statements is NOT correct? A.The total mass of the protons and neutrons in an atom accounts for most mass of the atom. B. Neutrons have a charge equal to that of electrons. C. The electron is the first subatomic particle discovered. D. Electron are negatively charge. 13.Chromium has a mass number 52 and atomic number of 24. Solve for number of protons? A.24. C. 52 B. 28 D. 76 snode 14. What particle (s) accounts for most of the mass of an atom? A. Proton C. Neutrons & Protons amous Soda wote B. Electron and Protons D. Neutrons ODO bogin 15.In a Bismuth atom, the atomic mass 209, Atomic number is 83. How many numbers of neutrons does it contain? A. 209 on on C. 83 B. 126 D. 292 en oires