91Ó°ÊÓ

For each pair of elements, determine the charge for their ions and write the proper formula for the resulting ionic compound between them. a. Ba and \(\mathrm{S}\) b. Cs and I

What is the formula mass for each compound? a. \(\mathrm{Co}\left(\mathrm{HCO}_{3}\right)_{2}\) b. \(\mathrm{LiHCO}_{3}\)

Name the ionic compound formed by each pair of ions. Use both the Stock and common systems, where appropriate. a. \(\mathrm{Cr}^{3+}\) and \(\mathrm{NO}_{3}^{-}\) b. \(\mathrm{Fe}^{2+}\) and \(\mathrm{PO}_{4}^{3-}\) c. \(\mathrm{Ca}^{2+}\) and \(\mathrm{CrO}_{4}^{2-}\) d. \(\mathrm{Al}^{3+}\) and \(\mathrm{OH}^{-}\)

Using Lewis diagrams, show the electron transfer for the formation of \(\mathrm{Li}_{2} \mathrm{O}\).

What is the formula mass of \(\mathrm{MgSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O}\) ?

For each pair of elements, determine the charge for their ions and write the proper formula for the resulting ionic compound between them. a. \(\mathrm{K}\) and \(\mathrm{S}\) b. \(\mathrm{S} \mathrm{c}\) and \(\mathrm{Br}\)

Using Lewis diagrams, show the electron transfer for the formation of \(\mathrm{CaF}_{2}\).

What is the formula mass of \(\mathrm{CaSO}_{4} \cdot 1 / 2 \mathrm{H}_{2} \mathrm{O} ?\)

Name the ionic compound formed by each pair of ions. Use both the Stock and common systems, where appropriate. a. \(\mathrm{NH}_{4}^{+}\) and \(\mathrm{NO}_{3}^{-}\) b. \(\mathrm{K}^{+}\) and \(\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}\) c. \(\mathrm{Cu}^{+}\) and \(\mathrm{CO}_{3}^{2-}\) d. \(\mathrm{Na}^{+}\) and \(\mathrm{HCO}_{3}^{-}\)

What characteristic charge do atoms in the first column of the periodic table have when they become ions?