Multiple Choice
Which of the following is the correct chemical formula for sodium carbonate?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct formula unit for sodium nitride?
A
NaN
B
NaNO3
C
Na3N
D
Na2N
Verified step by step guidance1
Identify the ions involved in sodium nitride: sodium (Na) and nitride (N).
Determine the charge on each ion: sodium typically forms a +1 ion (Na\^{+}), and nitride forms a -3 ion (N\^{3-}).
Balance the total positive and negative charges to make the compound electrically neutral. Since nitride has a charge of -3, you need three sodium ions (each +1) to balance one nitride ion.
Write the formula by combining the ions in the ratio that balances the charges: three sodium ions to one nitride ion, resulting in Na\_3N.
Confirm that the formula unit Na\_3N reflects the correct stoichiometric ratio and charge neutrality for sodium nitride.
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