Multiple Choice
Which of the following is the correct name for the N^{3-} ion?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct chemical formula for zinc nitrate?
A
ZnNO3
B
Zn2(NO3)3
C
Zn(NO2)2
D
Zn(NO3)2
Verified step by step guidance1
Identify the ions involved: zinc typically forms a Zn^{2+} cation, and nitrate is the NO_3^{-} anion.
Determine the charges of each ion: Zn^{2+} has a charge of +2, and NO_3^{-} has a charge of -1.
Balance the total positive and negative charges to form a neutral compound. Since Zn^{2+} has a +2 charge, you need two NO_3^{-} ions to balance the charge (-1 each, total -2).
Write the chemical formula by placing the cation first followed by the anion, using parentheses if more than one polyatomic ion is needed: Zn(NO_3)_2.
Verify that the formula is electrically neutral by confirming the total positive and negative charges cancel out.
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