Multiple Choice
Which of the following is the correct chemical formula for the ionic compound formed between magnesium (Mg) and sulfur (S) atoms?
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3. Chemical Reactions
Writing Ionic Compounds
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Which of the following is the correct chemical formula for sodium sulfate?
A
NaSO3
B
Na2SO3
C
Na2SO4
D
NaSO4
Verified step by step guidance1
Identify the ions involved in sodium sulfate: sodium ion (Na\^+) and sulfate ion (SO\_4\^{2-}).
Determine the charge on each ion: sodium ion has a +1 charge, sulfate ion has a -2 charge.
Balance the total positive and negative charges to make the compound electrically neutral.
Since sulfate has a -2 charge, two sodium ions (each +1) are needed to balance the charge.
Combine the ions to write the formula: two sodium ions and one sulfate ion give the formula Na\_2SO\_4.
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