Multiple Choice
Which statement is true about ionic compounds?
1
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3. Chemical Reactions
Naming Ionic Compounds
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What is the correct name for the cation in the ionic compound AlN?
A
Aluminate ion
B
Alum ion
C
Alumina ion
D
Aluminum ion
Verified step by step guidance1
Identify the cation and anion in the compound AlN. Here, Al is the metal (cation) and N is the nonmetal (anion).
Determine the charge of the cation. Aluminum typically forms a +3 charge, so the cation is Al^{3+}.
Determine the charge of the anion. Nitrogen typically forms a -3 charge as the nitride ion, N^{3-}.
Name the cation by using the element name followed by the word 'ion' when it is a simple metal ion. For Al^{3+}, the correct name is 'aluminum ion'.
Confirm that the compound name is formed by naming the cation first (aluminum ion) and then the anion (nitride ion), but since the question asks only for the cation name, the answer is 'aluminum ion'.
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