Chapter 2

What is the symbol of an ion with 16 protons, 18 neutrons, and 18 electrons? What is the symbol for an ion that has 16 protons, 16 neutrons, and 18 electrons?

Would you expect each of the following atoms to gain or lose electrons when forming ions? What ion is the most likely in each case? a. $\mathrm{Ra}$ c. $\underset{―}{P}$ e. $\mathrm{Br}$ b. In d. Te f. $\mathrm{Rb}$

For each of the following atomic numbers, use the periodic table to write the formula (including the charge) for the simple ion that the element is most likely to form in ionic compounds. a. 13 c. 56 e. 87 b. 34 d. $\underset{―}{7}$ f. 35

Name the compounds in parts a-d and write the formulas for the compounds in parts e-h. a. $\mathrm{NaBr}$ b. ${\mathrm{Rb}}_2\mathrm{O}$ c. $\mathrm{CaS}$ d. ${\mathrm{AlI}}_3$ e. strontium fluoride f. aluminum selenide g. potassium nitride h. magnesium phosphide

Name the compounds in parts a-d and write the formulas for the compounds in parts e-h. a. ${\mathrm{Hg}}_2\mathrm{O}$ b. ${\mathrm{FeBr}}_3$ c. $\mathrm{CoS}$ d. ${\mathrm{TiCl}}_4$ e. tin(II) nitride f. cobalt(III) iodide g. mercury(II) oxide h. chromium(VI) sulfide

Name each of the following compounds: a. $\mathrm{CsF}$ b. ${\mathrm{Li}}_3\mathrm{N}$ c. ${\mathrm{Ag}}_2\mathrm{S}$ d. ${\mathrm{MnO}}_2$ e. ${\mathrm{TiO}}_2$ f. ${\mathrm{Sr}}_3{\mathrm{P}}_2$

Write the formula for each of the following compounds: a. zinc chloride d. aluminum sulfide b. $\mathrm{tin}(\mathrm{IV})$ fluoride e. mercury(I) selenide c. calcium nitride f. silver iodide

Name each of the following compounds: a. ${\mathrm{BaSO}}_3$ c. ${\mathrm{KMnO}}_2$ b. ${\mathrm{NaNO}}_2$ d. ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$

Write the formula for each of the following compounds: a. chromium(III) hydroxide c. lead(IV) carbonate b. magnesium cyanide d. ammonium acetate

Write the formula for each of the following compounds: a. diboron trioxide c. dinitrogen monoxide b. arsenic pentafluoride d. sulfur hexachloride