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One of the most important requirements of chemistry is communication of information to others. Chemists discuss compounds by using both formulas and names. Names of compounds are universal. Therefore, a set of rules is used in the naming of ionic compounds. These rules allow for anyone to write a chemical formula using a compound name and name the compound when given a formula. Using what you have learned, complete the following quiz on ionic nomenclature. Select the best answer from the given choices.
A monatomic ion is an ion that has how many atoms?
0
1
2
3
A polyatomic ion is an ion that has __________ atoms.
Zero
One
Many
None of these
What is the name of the superscript on an ion?
Molar mass
Molecular number
Oxidation number
Formulae number
In order to form a stable compound, the charge on the anion must _______ the charge on the cation.
Be less than
Be equal to
Be greater than
Can’t say
Subscripts represent what in an ionic formula?
Number of atoms
No. of ions
Charge of ions
No. of molecules
Anion gets the suffix -ide when ionic compounds are named.
True
False
Monatomic ions simply use the _______ of the element.
Oxidation state
Name
Number
Charge
What is the oxidation number of the chromium in chromium (III) phosphate?
+1
+2
+3
-3
