7.1. Ionic Compounds http://www.ck12.org
- Cations that can possess more than one possible charge are named by the Stock system, in which the charge
is indicated in the name with Roman numerals. - Polyatomic ions consist of more than one atom and act as a single unit. Their names and charges must be
memorized.
Lesson Review Questions
- What is the purpose of an empirical formula?
- Define binary and ternary ionic compounds.
- What is the difference between a monatomic and a polyatomic ion?
- For each of the following ionic compounds, what ions are present and in what ratio?
a. MgBr 2
b. Li 2 CO 3
c. Fe 2 (SO 4 ) 3 - Predict the compound that forms when gallium combines with oxygen. What would the name of this com-
pound be? - Give the formula for each of the following ionic compounds:
a. ammonium nitrate
b. cobalt (II) sulfate
c. nickel (II) cyanide
d. vanadium (III) oxide
e. barium oxide
f. calcium hypochlorite - Name the following ionic compounds:
a. MgBr 2
b. Li 2 CO 3
c. KHSO 3
d. KMnO 4
e. (NH 4 ) 2 S
f. CuCl
g. CuCl 2 - Write the correct formulas for the following ionic compounds:
a. barium chloride
b. chromium(III) oxide
c. potassium sulfate
d. zinc phosphate
Further Reading / Supplemental Links
- Martín-Gil, J., F. J. Martín-Gil, G. Delibes-de-Castro, P. Zapatero-Magdaleno, and F. J. Sarabia-Herrero. 1995.
The first known use of vermillion. Cellular and Molecular Life Sciences 51 (8):759-761. - "Chemical Nomenclature. Chem Team 2012." Available from http://www.chemteam.info/Nomenclature/No
menclature.html.