8. Give the symbol and pumber of electrons in a neutral atom of 9. Give the isotope symbol and number of neutrons in one atom of the following elements. Show your calculations. Barium - 138 Sulfur 32 Carbon 12 Fluorine 19 Hydrogen - 1 Magnesium 24 Silicon 28 Mercury - 202 10. Name the element which has the following numbers of particles. Be specific. (Include charges and mass numbers where possible.) 26 electrons, 29 neutrons, 26 protons 53 protons, 74 neutrons 2 electrons (neutral atom) 20 protons 86 electrons, 125 neutrons, 82 protons (charged atom) 0 neutrons 11. If you know ONLY the following information can you always determine what the element is? (Yes/No). number of protons number of neutrons number of electrons in a neutral atom number of electrons