QQuestionChemistry
QuestionChemistry
Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions mg^2 +,au^3 +,f-,o^2 -
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Answer
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Step 1:
First, let's write the possible empirical formulas for binary ionic compounds using the given cations (mg²⁺, au³⁺) and anions (f⁻, o²⁻).
Step 2:
For each cation-anion pair, we need to balance the charges. The charge on the magnesium ion is + 2, and the charge on the gold ion is + 3. The charge on the fluoride ion is - 1, and the charge on the oxide ion is - 2.
Step 3:
MgF_2
Let's start with the magnesium ion (mg²⁺) and the fluoride ion (f⁻). To balance the charges, we need two fluoride ions for each magnesium ion, resulting in an empirical formula of MgF₂.
Step 4:
MgO
Now, let's consider the magnesium ion (mg²⁺) and the oxide ion (o²⁻). To balance the charges, we need one oxide ion for each magnesium ion, resulting in an empirical formula of MgO.
Step 5:
AuF_3
Next, let's consider the gold ion (au³⁺) and the fluoride ion (f⁻). To balance the charges, we need three fluoride ions for each gold ion, resulting in an empirical formula of AuF₃.
Step 6:
AuO_2
Finally, let's consider the gold ion (au³⁺) and the oxide ion (o²⁻). To balance the charges, we need two oxide ions for each gold ion, resulting in an empirical formula of AuO₂.
Step 7:
Therefore, the four possible empirical formulas for binary ionic compounds using the given ions are MgF₂, MgO, AuF₃, and AuO₂.
Final Answer
- MgF₂ - MgO - AuF₃ - AuO₂
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