Problem 50
Give an example of each of the following: (a) a monatomic cation, (b) a monatomic anion, (c) a polyatomic cation, (d) a polyatomic anion.
Problem 51
What is an ionic compound? How is electrical neutrality maintained in an ionic compound?
Problem 52
Explain why the chemical formulas of ionic compounds are usually the same as their empirical formulas.
Problem 53
What is the Stock system? What are its advantages over the older system of naming cations?
Problem 54
Give an example of an ionic compound that does not contain a metal.
Problem 55
Give the number of protons and electrons in each of the following common ions: \(\mathrm{Na}^{+}, \mathrm{Ca}^{2+}, \mathrm{Al}^{3+}, \mathrm{Fe}^{2+}, \mathrm{I}^{-}, \mathrm{F}\), \(\mathrm{S}^{2-}, \mathrm{O}^{2-}, \mathrm{N}^{3-}\)
Problem 56
Give the number of protons and electrons in each of the following common ions: \(\mathrm{K}^{+}, \mathrm{Mg}^{2+}, \mathrm{Fe}^{3+}, \mathrm{Br}^{-}, \mathrm{Mn}^{2+},\) \(\mathrm{C}^{4-}, \mathrm{Cu}^{2+}\)
Problem 57
Write the formulas for the following ionic compounds: (a) sodium oxide, (b) iron sulfide (containing the \(\mathrm{Fe}^{2+}\) ion), (c) cobalt sulfate (containing the \(\mathrm{Co}^{3+}\) and \(\mathrm{SO}_{4}^{2-}\) ions), (d) barium fluoride.
Problem 58
Write the formulas for the following ionic compounds: (a) copper bromide (containing the \(\mathrm{Cu}^{+}\) ion), (b) manganese oxide (containing the \(\mathrm{Mn}^{3+}\) ion), (c) mercury iodide (containing the \(\mathrm{Hg}_{2}^{2+}\) ion), (d) magnesium phosphate (containing the \(\mathrm{PO}_{4}^{3-}\) ion).
Problem 59
Which of the following compounds are likely to be ionic? Which are likely to be molecular? \(\mathrm{SiCl}_{4}, \mathrm{LiF},\) \(\mathrm{BaCl}_{2}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{KCl}, \mathrm{C}_{2} \mathrm{H}_{4}\)
