91Ó°ÊÓ

State the number of electrons that must be lost by atoms of each of the following to achieve a stable electron configuration: a. Li b. \(\mathrm{Ca}\) c. Ga d. \(\mathrm{Cs}\) e. \(\mathrm{Ba}\)

State the number of electrons that must be gained by atoms of each of the following to achieve a stable electron configuration: a. Cl b. Se c. \(\mathrm{N}\) d. I e. \(\mathrm{S}\)

State the number of electrons lost or gained when the following elements form ions: a. \(\mathrm{Sr}\) b. \(\mathrm{P}\) c. Group \(7 \mathrm{~A}(17)\) d. \(\mathrm{Na}\) e. \(\mathrm{Br}\)

State the number of electrons lost or gained when the following elements form ions: a. \(\mathrm{O}\) b. Group \(2 \mathrm{~A}(2)\) c. \(\mathrm{F}\) d. \(\mathrm{K}\) e. \(\mathrm{Rb}\)

Write the symbols for the ions with the following number of protons and electrons: a. 3 protons, 2 electrons b. 9 protons, 10 electrons c. 12 protons, 10 electrons d. 26 protons, 23 electrons

State the number of protons and electrons in each of the following: a. \(\mathrm{Cu}^{2+}\) b. \(\mathrm{Se}^{2-}\) c. \(\mathrm{Br}^{-}\) d. \(\mathrm{Fe}^{3+}\)

Write the symbol for the ion of each of the following: a. chlorine b. cesium c. nitrogen d. radium

Write the symbol for the ion of each of the following: a. fluorine b. calcium c. sodium d. iodine

Write the names for each of the following ions: a. \(\mathrm{Rb}^{+}\) b. \(\mathrm{Sr}^{2+}\) c. \(\mathrm{S}^{2-}\) d. \(\mathrm{F}^{-}\)

State the number of protons and electrons in each of the following ions: a. \(\mathrm{P}^{3-}\), needed for bones and teeth b. \(\mathrm{F}^{-}\), used to strengthen tooth enamel c. \(\mathrm{Mg}^{2+}\), needed for bones and teeth d. \(\mathrm{Ca}^{2}+\) needed for bones and teeth