QQuestionChemistry
QuestionChemistry
What is the name of the molecular compound SO^3?
A. sulfur oxide
B. sulfur(2$) oxide
C. sulfur trioxide
D. sulfur tetraoxide
E. none of the above
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Answer
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Step 1:: Understand the problem
We need to identify the name of the molecular compound SO^3.
Step 2:: Recall the rules for naming binary compounds
In binary compounds, the first element is always the metal or metalloid and the second element is always nonmetal. The number of oxygen atoms in the compound is indicated by the Roman numeral or the suffix -ide or -ite.
Step 3:: Analyze the given compound SO^3
In this compound, S is the first element and O is the second element. Since O is oxygen, which is more electronegative than S, we know that S has a positive charge and O has a negative charge. The charge on S is determined by the number of O atoms. In this case, there are three O atoms, so S has a charge of + 4 (to balance the charges of the three O atoms).
Step 4:: Identify the name of the compound
Since S has a charge of + 4, the Roman numeral for 4 is used to indicate the charge. Therefore, the correct name for the compound SO^3 is sulfur(2$) oxide or option B.
Final Answer
The name of the molecular compound SO^3 is sulfur(2$) oxide (option B).
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