Question

first, launch the video below. during the video, youll be asked a conceptual question about the key concept. after watching the video, answer the related question at the right. you can watch the video again at any point to review.
part a
formula: mgso₄
name: manganese (ii) sulfite
which of the following statements identifies why this formula–name combination is wrong?
view available hint(s)

• so₄²⁻ should be named sulfate, not sulfite.
• mg should be named magnesium, not manganese.
• mg is a group 2a metal, thus no roman numeral should be used.
• all of the statements identify why the formula - name is wrong.

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Explanation:

1. Analyze the first option: The ion $\ce{SO_4^{2-}}$ is sulfate (sulfite is $\ce{SO_3^{2-}}$), so this is a mistake.
2. Analyze the second option: The symbol $\ce{Mg}$ represents magnesium, not manganese (manganese is $\ce{Mn}$), so this is a mistake.
3. Analyze the third option: Magnesium (group 2A) has a fixed +2 charge, so no Roman numeral is needed in its name, so this is a mistake.

Since all three statements identify errors in the formula - name combination, the correct option is the one stating all statements are correct.

Answer:

D. All of the statements identify why the formula - name is wrong.