Multiple Choice
What is the correct chemical name for the compound with the formula Ba_3N_2?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct chemical formula for magnesium fluoride?
A
MgF2
B
MgF
C
Mg2F
D
Mg2F2
Verified step by step guidance1
Identify the charges of the ions involved: magnesium typically forms a Mg^{2+} ion, and fluoride forms an F^{-} ion.
Determine the ratio of ions needed to balance the overall charge to zero. Since Mg^{2+} has a +2 charge and F^{-} has a -1 charge, two fluoride ions are needed to balance one magnesium ion.
Write the chemical formula by combining one Mg^{2+} ion with two F^{-} ions, resulting in MgF_{2}.
Check the options given and compare them with the formula derived: MgF, Mg2F, Mg2F2, and MgF2.
Confirm that MgF_{2} is the correct formula because it reflects the proper charge balance and stoichiometry of magnesium fluoride.
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